Stand side-on to a bench with your closest hand and knee on the bench, back parallel to the floor (neck in line) and a dumbbell in your other hand, arm hanging straight down.
侧立于练习凳一侧，靠凳一侧的手与膝支撑于凳。背部与地面平行(与颈部成一条直线)，另一侧手手持哑铃，手臂垂直悬于体侧。
To loosen your quadriceps, stand up, grab a foot behind your back, and pull that foot to your butt, keeping your knee pointed at the ground (figure 6). Feel the stretch through your quadriceps.
放松四头肌时，站者，从后面抓住脚底，把脚拉向臂股，膝盖朝下（图六），感觉四头肌伸展。
The prosthetic leg is an important part for the above-knee amputee to stand up and walk.
单腿膝上截肢的残疾人欲站立行走，假腿便要成为他们身体的重要组成部分。
The prosthetic leg is an important part for the above-knee amputee to stand up and walk.
单腿膝上截肢的残疾人欲站立行走，假腿便要成为他们身体的重要组成部分。
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