健身房英语ABC
2004-2-18
课程类:
〔yoga瑜伽〕〔spinning动感单车〕〔body arts身体艺术〕〔aerobics有氧操〕〔step踏板〕〔boxing拳击〕〔karate空手道〕〔fitball健身球操〕〔hot ball热力球操〕〔ABS(abdomen back stretch)腹背部训练〕身体部位:
〔thigh大腿〕〔innerlouter thigh大腿内部/外侧〕〔calf(calves)小腿〕〔butt(buttocks)臀部〕〔triceps肱三头肌〕〔biceps肱二头肌〕〔heel脚后跟〕〔hamstring腘窝〕〔lower back下背(腰的部
位)〕Chest press machine
坐姿推胸机
sover machine
双臂交叉训练机(大飞鸟机)Military press
肩部推举机
Seated row machine
坐姿划船机
Rotary torso machine
旋转训练机
Multi-hip machine
臂部复合训练机
Outer thigh abductor machine
腿部外弯机
Inner thigh adductor machine
腿部内弯机
Vertical leg press
垂直蹬腿练习器
Decline Olympic bench
奥林匹克下斜椅
Incline Olympic bench
奥林匹克上斜椅
Roman chair/back hyperextension
罗马凳
Hyperextension
腹背训练凳
2-tier horizontal dumbbell rack
哑铃架
Standard weight tree
铃片架
Olympic weight tree
铃片架
Stretch corner
伸拉角
Stretch zone
伸拉中心
Leg press
腿部推蹬机
Leg extension
腿部伸展机
Standing tricep
站式肱三头肌训练器
Standing bicep
站式肱二头肌训练器
Dip chin ab
单杠提膝器
Preacher curl bench
屈臂训练凳
Lat
复合高拉机
Row
复合划船机
Abdominal
腹部训练器
Cable column
复合拉伸机
Hamstring
低拉机
Utility bench
三角椅
Adjustable bench
可调式哑铃椅
Barbell
杠铃架
Double tier dumbbell
双层哑铃架
Recumbent cycle
卧式健身车
Treadmills
踏步机
Display stem: 显示器支撑杆External circlip:
Display lower: 显示器下盖
Flush head press in stud: 埋头大头钉
Seat carriage 座位滑动架
Pozi美国百老汇舞台的专业舞者,也是知名节目主持人更是健身专家
IEC Free plug, shutter snap fit: 通用插头
Caplug 盖塞
End plaque cap 瓷花后盖
End cap 后盖
Pedal leaver arm: 踏板臂
Rubber bump stop: 橡胶缓冲器
Crutch tip:
Nutsert 螺母
Toothed belt idler plate: 皮带惰轮锯齿板 (保留英文)
Step hole trim L/hand: 左踏板孔饰物
Step hole trim retaining block: 踏板孔饰物固定块
Runner assembly 转动组件
Roller member pivot: 辊构件枢轴
Logo wheel: 轮子(带标识)
Crank plate: 曲板(保留英文)
Ribbed insert: 扶手连杆
Cover center section: 盖板中心部分
Countersunk socket set screw: 埋头螺丝 PEC machine/butterfly
蝴蝶机
Incline press machine
上斜推胸机
Bicep curl machine
二头肌训练机
AB machine
腹部前屈机
Lat machine with mid row
高拉训练机
Leg curl machine/seated leg curl
屈腿训练机
Leg press machine
腿部推蹬机
Leg press/hach squat machine
倒蹬/斜蹬机
Pro-smith machine
安全杠铃练习机
Counter-balanced smith machine
史密斯机
Seated calf machine
坐姿小腿练习机
Dip station
双杠练习器
Military press
肩部推举机
Tricep press down machine
三头肌训练机
Arm curl
二头肌推举器
Standing hip/multi-hip machine
臂部复合训练机
Abdominal
腹部前屈机
Bi-axial chest press
双轴上斜推胸机
Seated chest press
坐工推胸机
Dual cable column
双臂训练机
Bicep
二头肌训练机
Tricep
复合三头肌训练机
Functional lift
复合抬举机
Calf
小腿训练机
Cable cross
复合飞鸟机
Flat bench
扁平椅
Abdominal bench
腹部训练椅
Single tier dumbbell
单层哑铃架
Squat rack
挂片式深蹲架
Stepper
台阶器
Rubber earring moulding: 橡胶基座
Allen wrench 通用扳手
Cord bracket 夹线板
Freeweight dumbbell 负重哑铃
Freeweight 负重
weight training 负荷训练
strength training 力量训练
endurance training 耐力训练
path of motion 动作路径
Overhead Tricep 三头肌高位训练机
Sets 套
Chest press
胸部推举机
Shoulder press machine
肩部推举机
Tricep press down machine
三头肌训练机
Back machine
背部训练机
Lat pull down
高拉机训练机
Leg extension machine
腿部伸展机
Flat bench
哑铃平椅
Flat/incline/decline bench
可调式哑铃椅
Flat Olympic bench
奥林匹克平椅
Vertical knee raise
单杠提膝器
Preacher curl bench
屈臂训练凳
Wab board
腹肌板
Seated calf machine
小腿训练机
Lateral shoulder raise
肩部侧推机
Hip abductor
腿部外弯机
Hip adductor
腿部内弯机
Chest mid-row
滑船机
Lat high row
高位滑船机
Roman Chair/ back hyperextension
罗马凳
45 hyperextension
腹背训练凳
Vertical knee raise
单杠提膝器
Upper back
背肌训练机
Incline trainer
上斜跑步机
Squat
蹲式复合训练机
Chest
复合胸部训练器
Shoulder
复合肩部训练机
Step
负重踏步机
Quadricep
复合腿部训练机
Plate loaded squat
挂片式深蹲机
Adductor
夹腿机
Upright cycle
立式健身车
Rubber boot: 橡胶支座
63 Amp time Lag glass body: 63 Amp保险丝
Wiring loom: 接线器
Poly “V” drive pulley: V形驱动滑轮
Full dog point socket set: 专用螺丝
Reps (repetition) 组
Weight stack 配重片
Cycling equipment健骑机/ 健身车
参考一下吧:
Chest press machine
坐姿推胸机
sover machine
双臂交叉训练机(大飞鸟机)
Military press
肩部推举机
Seated row machine
坐姿划船机
Rotary torso machine
旋转训练机
Multi-hip machine
臂部复合训练机
Outer thigh abductor machine
腿部外弯机
Inner thigh adductor machine
腿部内弯机
Vertical leg press
垂直蹬腿练习器
Decline Olympic bench
奥林匹克下斜椅
Incline Olympic bench
奥林匹克上斜椅
Roman chair/back hyperextension
罗马凳
Hyperextension
腹背训练凳
2-tier horizontal dumbbell rack
哑铃架
Standard weight tree
铃片架
Olympic weight tree
铃片架
Stretch corner
伸拉角
Stretch zone
伸拉中心
Leg press
腿部推蹬机
Leg extension
腿部伸展机
Standing tricep
站式肱三头肌训练器
Standing bicep
站式肱二头肌训练器
Dip chin ab
单杠提膝器
Preacher curl bench
屈臂训练凳
Lat
复合高拉机
Row
复合划船机
Abdominal
腹部训练器
Cable column
复合拉伸机
Hamstring
低拉机
Utility bench
三角椅
Adjustable bench
可调式哑铃椅
Barbell
杠铃架
Double tier dumbbell
双层哑铃架
Recumbent cycle
卧式健身车
Treadmills
踏步机
Display stem: 显示器支撑杆External circlip:
Display lower: 显示器下盖
Flush head press in stud: 埋头大头钉
Seat carriage 座位滑动架
Pozi美国百老汇舞台的专业舞者,也是知名节目主持人更是健身专家
IEC Free plug, shutter snap fit: 通用插头
Caplug 盖塞
End plaque cap 瓷花后盖
End cap 后盖
Pedal leaver arm: 踏板臂
Rubber bump stop: 橡胶缓冲器
Crutch tip:
Nutsert 螺母
Toothed belt idler plate: 皮带惰轮锯齿板 (保留英文)
PEC machine/butterfly
蝴蝶机
Incline press machine
上斜推胸机
Bicep curl machine
二头肌训练机
AB machine
腹部前屈机
Lat machine with mid row
高拉训练机
Leg curl machine/seated leg curl
屈腿训练机
Leg press machine
腿部推蹬机
Leg press/hach squat machine
倒蹬/斜蹬机
Pro-smith machine
安全杠铃练习机
Counter-balanced smith machine
史密斯机
Seated calf machine
坐姿小腿练习机
Dip station
双杠练习器
Military press
肩部推举机
Tricep press down machine
三头肌训练机
Arm curl
二头肌推举器
Standing hip/multi-hip machine
臂部复合训练机
Abdominal
腹部前屈机
Bi-axial chest press
双轴上斜推胸机
Seated chest press
坐工推胸机
Dual cable column
双臂训练机
Bicep
二头肌训练机
Tricep
复合三头肌训练机
Functional lift
复合抬举机
Calf
小腿训练机
Cable cross
复合飞鸟机
Flat bench
扁平椅
Abdominal bench
腹部训练椅
Single tier dumbbell
单层哑铃架
Squat rack
挂片式深蹲架
Stepper
台阶器
Rubber earring moulding: 橡胶基座
Allen wrench 通用扳手
Cord bracket 夹线板
Freeweight dumbbell 负重哑铃
Freeweight 负重
weight training 负荷训练
strength training 力量训练
endurance training 耐力训练
path of motion 动作路径
Overhead Tricep 三头肌高位训练机
Sets 套
Runner assembly 转动组件
Roller member pivot: 辊构件枢轴
Logo wheel: 轮子(带标识)
Chest press
胸部推举机
Shoulder press machine
肩部推举机
Tricep press down machine
三头肌训练机
Back machine
背部训练机
Lat pull down
高拉机训练机
Leg extension machine
腿部伸展机
Flat bench
哑铃平椅
Flat/incline/decline bench
可调式哑铃椅
Flat Olympic bench
奥林匹克平椅
Vertical knee raise
单杠提膝器
Preacher curl bench
屈臂训练凳
Wab board
腹肌板
Seated calf machine
小腿训练机
Lateral shoulder raise
肩部侧推机
Hip abductor
腿部外弯机
Hip adductor
腿部内弯机
Chest mid-row
滑船机
Lat high row
高位滑船机
Roman Chair/ back hyperextension
罗马凳
45 hyperextension
腹背训练凳
Vertical knee raise
单杠提膝器
Upper back
背肌训练机
Incline trainer
上斜跑步机
Squat
蹲式复合训练机
Chest
复合胸部训练器
Shoulder
复合肩部训练机
Step
负重踏步机
Quadricep
复合腿部训练机
Plate loaded squat
挂片式深蹲机
Adductor
夹腿机
Upright cycle
立式健身车
Rubber boot: 橡胶支座
63 Amp time Lag glass body: 63 Amp保险丝
Wiring loom: 接线器
Poly “V” drive pulley: V形驱动滑轮
Full dog point socket set: 专用螺丝
Reps (repetition) 组
Weight stack 配重片
Cycling equipment健骑机/ 健身车
Ribbed insert: 扶手连杆
Cover center section: 盖板中心部分
Countersunk socket set screw: 埋头螺丝
Step hole trim L/hand: 左踏板孔饰物
Step hole trim retaining block: 踏板孔饰物固定块
在忙碌的工作中经常需要同时处理多个任务,这使你有时经常忘记之前想要做的事情,虽然你可能使用了很多办法来改善这种情况比如记在笔记本上,或者手机上,但是这么做的同时你也错失了一个锻炼自己大脑的机会。
其实在多任务并行的时候,我们之所以无法记住或者说唤起对之前任务的记忆,是因为大脑没有足够的缓存来存储之前任务的状态,所以在我们进行下一个任务的时候,往往没有办法保留之前任务的记忆,等到再次回来的时候,已经几乎不能想起上次任务的样子了。
但是这样说其实也不准确,因为你的大脑可是一台超级计算机,大脑不同于一般的计算机,它每天都在进化,每天受到不同的刺激都能产生新的突触和神经元,这些新生的突触又在悄然发生链接,经科学家研究,我们的大脑每天都在发生这种变化,每一天都是一个崭新的你,这也就可以解释为什么喜欢追求刺激和爱思考总结的人会更加聪明,因为他们在不停的用脑,不停的刺激和产生新的神经元和链接,上亿的脑细胞在不停的发生链接,它们之间的刺激和互动也越来越强烈。当你遇到一个问题,它们用闪电般的速度传递一种刺激,迅速的搜索脑海中的记忆,及时为你呈现答案。
所以从这个角度来说,大脑的缓存也就是暂存的记忆量其实是可以提高的,如何提高这种能力呢,答案就是 :刻意练习。
本文提供的这种方法仅仅作为一种参考,因为条条大路通罗马。
这就是所谓的N-Back练习法,这种方法可以用来评估我们的神经感知和工作记忆力,此方法是由神经科学家 Wayne Kirchner 在1958年提出的用来进行对大脑短期记忆进行研究,测试大脑对快速变化的信息的不同反应,在研究的过程中发现对人的多任务切换的工作记忆力有很大提高。
具体的方法如下:
由此可以看出随着N的值不断的增大,这个游戏或者说是测试的难度也会不断增大,因为这要求你记忆的字母序列更加长,也要同时记忆不同字母的出现次数,因此更加难以记忆。
目前此种方法的应用有:户外实验,临床医学,培训公司等许多方面。
这就是N-Back记忆法,希望能对大家有所帮助,其实刻意练习——不断地尝试唤醒自己对学习过的东西的记忆本就是一种巩固学习成果的方法,大家可以以此方法为启发,看看生活中你还能怎么锻炼自己的记忆,好好的保养你的大脑。
一、手部练习的方法 1、把两只手摆成一个很像骑马的姿势,手指往下放,要感觉到很轻松的感觉 2、然后你手腕往下压,可是手指头部分要让他往上,手腕向下压的时候你是否看到你的小手臂有一个凹洞,就是轴那里有个小洞(反复那样练习就是了) 3、练习当中,你看看你手的上半部分,肌肉有没有爆破出来,要是有,你再看看胸部与手臂相连的那部分有没有跳动,还有背部的肌肉有没有跳动?手腕向下压时,胸前的肌肉稍微有点跳动的感觉是不是,但是要注意的是:不是胸部往前,而是胸肌向上跳动。要是有了上面的几点,那就正确了。 估计刚开始练的时候背肌部分的跳动可能还出不来,但是要强加练习就OK了。要注意的是练手的时候肩部不要用力,用力的都在手腕上,请各位尝试一下是否有感觉。 这个手部的练习要配合上脚部的练习才好,这样才自然 二、脚部POP的练习 脚步的POP其实也就是大家所说的胯下的POP,很多人都把它想的好复杂好难练,其实胯下的练习比手部练习更加容易,只要大家别把它想的太复杂就可以了,尽量的简单,越简单越好,下面就跟着我的方法来练习一下,很快就有点功效了哦,注意的是利用膝盖。 1、你先站起来,然后膝盖向前稍微弯曲,有点像要坐下的感觉 2、你从第一点所说的,慢慢从这个动作站起来,记得是慢慢的把脚打直,但别用力 3、慢慢的站起来,脚快要站直的时候,你突然在这里用力快速把脚打直(也就是膝盖往后),这样反复练习是不是达到跨下的POP了呢?记得千万别屁股用什么力或者往里收,那是不正确的练习方法,大家尽量想的越简单越好 这个脚部的练习要配合上手部的练习才好,这样才自然 三、头部的POP 其实这个头部分的练习用打字的方法真的很难解释清楚,下面就打个比方让大家按这个来练习吧! 其实也就是头部往45度角的方向用力来达到的一种效果,可能我那么说大家都有点迷惑,我就打个比喻吧 我们经常在路上碰见熟人的时候都会叫一声“喂”,记得,头部的POP有点像“喂”的一声,怎么说呢?当你在叫别人“喂”的时候,头部是不是有点稍微向上点了一下,就是那一“点”其实就是POP了,只是你要用力而且要短时间内完成而已。注意是先保持原来轻松的表情,突然叫别人喂的一声,反复练习就会学会头部的POP,是不是有点感觉了呀!但是下颚别用力,用力是在后脑勺,CAN YOU FOLLOW ME? 四、胸部的POP 为什么我在前面说胸部不用练习呢?其实也不是没有道理,等你练会我以上说的三点以后,你的胸部自然就会POP了,你不信你就试一下,呵呵,所以这个不用练习哦(但是真正单一的胸震是需要练习的,练习方法第一把腰挺直了,你会感觉到腰有点酸,注意提胸,然后慢慢放松的时候突然来个POP,但是这个POP不是腰出力,腰挺直了只是为了POP的时候更漂亮,详细讲解的话下次再说吧!大家先练好我前面说的) 最后要补充的是国内一级POPPER:BOKY的一些观点,很有用的,大家仔细看看: 1。手臂上的POP主要用到的是三头肌和桡侧腕短肌。可以尝试做这样的动作:五个手指扶住墙壁,然后用手心的位置去推墙(注意肘关节自然弯曲,不要用力去大直)。在这个动作里用到的肌肉群,大致就是手臂上的POP位置。 2。胸部的肌肉是垂直向上走。这点阿KING你说的很好。因为需要注意的是,很少爆点会利用伸展关节来完成。所以反过来说,如果胸大肌不是向上走,势必会牵连到脊椎关节的弯曲。另外,胸肌的POP和颈部肌肉的POP一般是同时完成的。可以这样理解。胸肌往上走的时候,头部保持原来的位置或者略微下压,这样自然就压迫到脖子上的肌肉了。另外,怎么样去锻炼颈部的肌肉呢?大家尝试发两个音,一个是“噢”,这个口型张到最大的时候,很自然的可以绷紧胸锁乳头肌。另外一个是“哈”,最大幅度去做的这个口型,可以绷紧肩胛提肌和肩胛舌骨肌。这三块肌肉是做颈部很重要的POP来源。另外,有的时候你会看到POPPER在台上笑得很开,哈哈~现在可以理解吗?这样不单是为了渲染气氛,也是轻松完成脖子上爆点的好办法。 3。腿部的POP不多说了。这是唯一的需要利用关节才能完成的POP。因为膝盖自然弯曲的情况下很难绷紧大腿上的各部分肌肉。另外需要补充的是,下盘的POP不单单只有大腿肌来完成。在一些特定的动作里,也会用到臀部和后腰肌肉上的POP。
Doing exercises in the gym(健身房)
Usually I would do some exercises on the weekend,because I thought keeping in a good health can help me study well Last weekend, It was rainning outside so I decided to do some exercises in the gym When I went into the gym, some people were doing exercises there A man was doing weight training and trying his best to upraise heavier weight There were two girls running on the treadmill(跑步机),neither too fast nor too slow In the next room there was a fitness instructor(健身教练) was teaching some young people doing yoga(瑜珈), which made they do some strange actions
After some minutes' warm up (热身),I started to run on the treadmill and ride on the exercise bike(健身脚踏车) Both of them were easy and good for most of people Besides,I did some dumbbell (哑铃)exercises ,seating type chest pushing, high pulling force back muscle training, butterfly clamp chest muscle training, thigh stretching, leg treading, abdomen muscle training, vertical pulling force training (坐式推胸、高拉力背肌训练、蝴蝶夹胸肌训练、大腿伸展、蹬腿、腹肌训练、直立式拉力训练)
Finally,I cooled down myself and had a break before I went home
一些Funny Gym Stories
1A buddy of mine uses an iPod shuffle when he works out and usually clips it to his waistband We're working out one day and he's doing the seated leg press and next thing you know, I hear an ever increasing noise in the background, my friend screams, pushes the weight up, and promptly removes his earbuds - his love handle managed to somehow push the volume button ALL the way up on the Shuffle (there's no Hold button on it)
One time, a big muscular dude was setting up to do some deadlifts There were some ladies in the area, so of course, he stacks on more weight On his first rep, he ripped his pants
In general, I find it amusing how guys will attempt to lift more weight than usual when women are around The funny thing is, the more weight you push, the more constipated you look In fact, my wife thinks I look like I'm taking a massive dump when I'm lifting - something which, for some odd reason, she doesn't find attractive
2
I frequnetly go to the gym in the AM like 445 AM! And so there are very few people at the gym at that time Well i typically run on the treadmill on those days Well like clockwork every day there is this strange old man that gets on the treadmill RIGHT NEXT to me! There are 20 extra open treadmills and he always picks the one right next to me So if that isnt that funny he also farts a lot It smells sooo bad Every step he takes he rips a fart and its just embarassing for him
I seriously have stopped running in the morning because i was so creeped/disgusted out
3I do treadmill races in my head with whoever is on the treadmill next to me, seeing if I can outlast them, while they're probably oblivious and just doing their own thing One day, I'm walking to my apartment, and this guy stops me and asks me if I was in the gym that morning in green shorts He says, "I was on the treadmill next to you, and you just kept running and running I thought I should be able to outrun a girl, and I was trying to keep up with you for a long time, but in the end I gave up"
Totally made my day
4Once saw a guy at the Fitness First off Layhill Road try and flat bench 405 with no spot Now of course he was a big dude, but c'mon nobody plays around with that kind of weight sans spot Well he did- and regretted it My buddy and I had to pull it off of him He then went into a whole "I could have gotten it if my shoulder was better, or my wrist" lame
At the University of Maryland Campus Rec Center I've seen a few people bring food in And not like a protein shaker, or the like But Ive seen guys in between sets eating Cluck U ()
Finally there was an older gentleman that worked out at the WSC in downtown Bethesda that my freinds and I used to refer to as "the vinegar man" because he stank like bad vinegar f'n gross!
5One of my friends, who is a marathon runner (that should have been my first clue), somehow convinces me to go to a spinning class with her As I've been hearing all sorts of things about how spinning is so "in", I figure hey why not
We get to class and I'm completely overwhelmed by how hard it is However, my friend is next to me, and she hasn't even broken out into a sweat (we were in a beginner's class) I vow to keep up with her, even if it'll kill me
The instructor then tells us that now that we're "warmed up", she's going to increase the resistance And we had to reach down to turn the little resistance knobby
and I promptly fall off the bike
The stationary bike
My friend, after gasping in horrorimmediately whips out her celphone and takes a picture of me and texts it to all of our friends By the time I got home from the gym, there were 20+ messages waiting for meall mocking
Wah
6New funny gym story i got these new shoes to wear while spinning They clip onto the pedals and dont make my feet swell like normal shoes So there i am about to stop and get off and my shoes got stuck I was able to get one off but the other was stuck So everyone in the class is laughing at me and i feel awful I finally am able to get it out and i had to use so much force that it threw me off balance and i lost my footing and literally flew off my bike and hit my head and elbow on the bike next to me Needless to say i will be taking a break from my spinning shoes until i figre out how to use them :P
1、Treadmill:跑步机。
A treadmill is a device generally for walking or running or climbing while staying in the same place 跑步机通常是在原地行走、跑步或攀爬的设备。
2、Exercise bike:健身脚踏车。
Exercise bike(as known as stationary bicycle,exercise bicycle or spinning bike)健身脚踏车(也称为固定自行车、健身自行车或动感单车)。
3、Leg press machine:腿压机。
The leg press is a weight training excercise in which the individual push a weight or resistance away by them using their legs 腿压机是一种重量训练运动,在这种运动中,个人用腿把重量或阻力推开。
4、Bench press:仰卧推举。
Bench Press is a full body, compound exercise You can get your chest, shoulders and triceps trained 仰卧推举是一种全身综合锻炼。你的胸部、肩膀和三头肌能得到锻炼。
5、Dumbbell:哑铃。
The dumbbell is a piece of equipment used in weight training It can be used individually or in pairs, with one in each hand哑铃是一种用于举重训练的器械。它可以单独使用,也可以成对使用,每只手拿一个。
6、Rowing machine:划船器。
A rowing machine is essentially a piece of exercise equipment that mimics the motion of rowing a boat in water赛艇机本质上是一种模拟水中划船运动的运动器材。
卧推,主练胸大肌、胸小肌、三角肌前束、肱三头肌和肘肌,兼练前锯肌、肱二头肌、喙肱肌及前臂肌群等,
动作要求:
1 卧推凳的规格一般以120×30×45(厘米)为宜。120厘米长,便于头、背、臀均能在凳上;30厘米左右宽,既能使背部放平稳,又能使手臂在下放时不受阻挡,尽可以放低;45厘米左右高,既能使双脚平放地面,维护身体的稳定,又利于保护帮助。
2 头、背及臀紧贴凳面,保持挺胸姿势,腰部拱起,与凳间距离为可顺利平插一个手掌。
3 握距宽于肩,但不可过宽,在力量举比赛时规则时要求握距不能大于81厘米。4 不要让杠铃压迫胸部了。将杠铃放在胸上调整握距 或借助胸部反弹推起杠铃都是错误的。5 躯干不可扭动,左右均衡用力 ,两臂同时伸展,横杠始终垂直于躯干,平行于地面。6 两脚不能蹬地借 力,臀部和背部不能离开凳面。
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