amputate
verb [ T or I ] uk/ˈæm.pjə.teɪt/ us/ˈæm.pjə.teɪt/
截（肢）;切除（身体部位）
to cut off a part of the body
They had to amputate his foot to free him from the wreckage. 为了把他从残骸中解救出来，他们只好截断他的一只脚。
In these cases there is no choice but to amputate. 在这些情况下，除了截肢别无选择。