That comment needs some amplification.
这个评论需要进一步充实。
The rate of amputation is 27% in these cases.
截肢率为27%，总病残率达55%。
You ever see another amputation at an angle like that?
你见过象他那种角度的切断手术吗？
Energy expenditure can be minimized by a properly performed above-the-knee amputation.
能量消耗可通过恰当的`膝上截肢术最小化。
She retained a number of copies for further annotation.
她保留了许多副本以便作进一步的注解。