中文：amputate是指通过手术将身体的一部分或者器官切除的过程，通常用于截肢或者手术切除病变组织。

英文：Amputate refers to the process of surgically removing a part of the body or an organ, usually used for amputation or surgical removal of diseased tissue.

音标：[ˈæmpjəˌteɪt]

怎么读（音标）：阿姆皮特

用法：amputate是一个动词，常用于医学领域。可以作为及物动词，后接被切除的身体部位或器官作为宾语。也可以作为不及物动词，后接介词from表示从哪里进行切除。

例句1-5句且中英对照：

1. The doctor had to amputate his leg due to severe infection.

医生不得不截肢他的腿因为严重感染。

2. The soldier lost his arm in the war and had to undergo surgery to amputate it.

这名士在战争中失去了胳膊，不得不接受手术将其截肢。

3. The tumor had spread too far and the only option left was to amputate the affected area.

肿瘤已经扩散太远，唯一的选择就是截断受影响的区域。

4. In some cases, it is necessary to amputate a limb in order to save a person's life.

在某些情况下，为了挽救一个人的生命，必须截肢。

5. The doctor explained that they had to amputate the finger because it was badly crushed in the accident.

医生解释说，他们不得不截断这根手指，因为它在事故中严重受伤。

同义词及用法：

1. Cut off: 意思与amputate相同，也是指通过手术将身体的一部分或者器官切除。常用于非正式场合。

例句：The surgeon had to cut off his arm in order to prevent the spread of infection.

2. Sever: 也可以表示切除身体部位或器官的意思，但更多地用于比喻性的语境中。

例句：The company decided to sever ties with its underperforming branch.

3. Remove: 可以指任何形式的移除或者切除，在医疗领域也可以表示手术移除病变组织。

例句：The dentist had to remove her wisdom teeth due to overcrowding.

4. Dissect: 指通过手术将组织或器官分开或剖开。常用于医学领域。

例句：The pathologist dissected the tumor and found it to be benign.

编辑总结：

Amputate是一个专业性较强的动词，在医学领域经常使用。它的含义是通过手术将身体的一部分或者器官切除，通常用于截肢或者手术切除病变组织。在日常生活中，也可以使用同义词来表达类似的意思。为了避免歧义，建议在医学场合使用amputate这一专业术语。