1、Mike is a nosey chap, he always wants to be in on everything
麥克是一個愛管閑事的家伙，他老是想知道每一件事情。

2、Who would you like to be in on the meeting?
你希望誰來參加會議?

3、Hotel manager says it's to fix a broken pipe, but he may be in on it too.
酒店經(jīng)理說他們是去修理破裂的水管道，但他也有可能混入其中。

be in on翻譯