沪友详解A：big cheese/big gun
the big cheese意思就是公司内部非常重要或有实权的人物，这是个非正式的表达。不能在老板面前用。

big cheese/big gun
英汉
big cheese n.
重要人物, 具有影响力的人
英英
big cheese Noun
an important influential person; "he thinks he's a big shot"; "she's a big deal in local politics"; "the Qaeda commander is a very big fish"
例句
1、He is the big cheese.
他是个要人。
2、Who’s the big cheese in the small town?
谁是该小镇里的头面人物？
3、Angela thought he was the big cheese, but in fact he was only one of the maggots!
安吉拉自以为是个了不起的人物，其实他不外是条小爬虫。
4、Another reason is what could be called the big cheese factor.If the boss is constantly logging in while on a holiday it signals everyone else that they should do the same from their vacation, says Lawrence.
另外一个原因我们称之为"老板效应"，劳伦斯说，如果老板休假时总是不忘打开电脑与办公室联系，这等于暗示每个人都应该这样做。