do a service的用法和樣例：
例句
- He has a whole stable of informers working for him.
他有一群告密者為他效勞。 - I'm glad to do a service for you.
我很樂意為您效勞。 - The Queen requited his services with a knighthood.
女王為表彰他的貢獻封他為爵士。 - Einstein make a great contribution to science.
愛因斯坦對科學作出了偉大的貢獻。
辭彙搭配
- do a service 效勞
