The guy I kicked in the balls, did they have to amputate them?(被我踢到頭的那個家伙有沒有把頭切掉？)

They may have to amputate.(他們可能不得不施行截肢手術。)

It may be necessary to amputate his foot.(切除他的腳是必要的。)

Although the doctor tried desperately to save the crushed bones, he finally had to amputate the fingers from both the boy's hands.(醫生用盡渾身解數去挽救那已被砸傷的骨頭，但他最后不得不把男孩兩只手的手指全部截掉。)

Doctor had to amputate his arm to save his life.(醫生必須將他的手臂截肢來保全他的生命。)

Doctors later had to amputate one of his legs and he lay in a critical condition for months.(醫生隨后不得不給他截去一只腿，并且(他)得躺在那里靜養數月。)

So we amputate. - Arm and leg?(只能截肢-手臂和腿?。)

This is serious, I am afraid we'll have to amputate his leg.(這事情很嚴重，我恐怕我們不得不對他進行截肢。)

Sometimes we even amputate a limb.(有時我們甚至要鋸肢。)

Don't say, 'Oh my god, I had gangrene and they almost had to amputate my leg.(不要說，‘天啊，我得了壞疽，我的腿幾乎要被截掉了’。)