求翻译大神帮我翻译一下！

尊敬的凯格林
我是一位来自中国的健身迷，同时也是您的粉丝！经常看您的健身教学视频！我想请问一下健身腰带和绑膝的运用规则和方法。目前我的腿举成绩是极限300kg，深蹲极限100kg，硬拉极限是120kg。请问我有必要带腰带和绑膝吗？它们的作用是防止我受伤？还是增加我的成绩呢？是不是必须需要的装备呢？
另外我太羡慕您的背阔肌了。能否教我几组背部的超级组训练动作和计划？或者动作要领？
最后预祝您在2017年比赛中大获全胜！
译文：
Dear Mr Kai Greene,
I am a fitness fan from China, and I am also your fan! Watch your fitness teaching video often! I would like to consult you about how to use the fitness belt and kneecap At present, my stif-leg deadlifts limit 300kg, squat limit 100kg,dead lift limit 120kg Do I have to use the belt and kneecap Do they prevent me from getting hurt Or does it improve my level Is it necessary And I am so envious of your latissimus dorsi Can you teach me the super group training action and back training program Or the action essentials I wish you gain a complete victory in 2017!