v.切断；截（肢）

It may be necessary to amputate his foot. 切除他的脚是必要的。

Her arm is so badly injured they will have to amputate (it). 她的胳膊伤势严重，他们不得不锯掉(它).

Doctor had to amputate his arm to save his life. 医生必须将他的手臂截肢来保全他的生命。

Her leg was so badly damaged that the doctors had to amputate. 她的那条腿伤得很厉害，医师只得将其截除。