rock是岩石，boat是船，rock the boat字面意思就变成了“摇晃船”，其实真实意思是“捣乱，惹麻烦，破坏现状”。

【例句】
She is a good kid and never rocks the boat at home.
她是一个听话的孩子，从来不在家里捣乱。

Don't rock the boat by making too many changes around here.
别在这里做太多改变而破坏现状。