外科

例句：

1. 1. He underwenta minor surgery to repair his broken arm.
   他接受了一个小手术来修复他的断臂。
2. 2. The surgeon performed the operation with precisionand skill.
   这位外科医生以精确和技巧进行了手术。
3. 3. Surgery is acomplex procedure that requires specialized knowledge and training.
   外科手术是一项复杂的程序，需要专门的知识和训练。