chief operating officer

例句：

1. 1. The CEOof the company is expected to make asignificant announcement tomorrow.
   公司首席执行官预计将于明天做出重大宣布。
2. 2. The new CEO has alreadymade some changes to improve efficiency.
   新任首席执行官已经实施了一些改革以提高效率。
3. 3. The CEO's decision will have a significant impacton the company's future.
   首席执行官的决定将对公司的未来发展产生重大影响。