operation / ˌɒpəˈreɪʃ(ə)n / n. 手术;企业;经营【人教版高中英语必修三 unit 2 （单词与全书例句）】

operation
/ ˌɒpəˈreɪʃ(ə)n /   
n.    手术;企业;经营

1. During the operation, she sat in the waiting room for over an hour worrying about him.

2. heart operation

3. He underwent a three-hour heart operation.

4. es, well, a five-hour operation is pretty tiring.

1. 手术期间，她在候诊室里坐了一个多小时，一直担心着他。

2. 心脏手术

3. 他接受了一场持续三个小时的心脏手术。

4. 嗯，五个小时的手术确实很累。