表达 “mind your language” 用来提醒某人，尤其是孩子，说话要小心，措辞要谨慎，言语要得体，以免触怒或冒犯他人。

其中的动词 “mind（注意）” 可以用 “watch” 替换，即 “watch your language”，意思不变。

• Make sure you mind your language when you go to visit your grandmother. She likes it when you are polite!
  你去看望祖母时，说话一定要注意。她喜欢你彬彬有礼的样子！
• Watch your language, Mike! The windows are open, and they can hear everything you say. I think we should go somewhere else to complain about Martin.
  小心说话，迈克！窗户开着，他们能听到你说的每一句话。我觉得咱们应该去别的地方抱怨马丁。
• You might want to watch your language. What you just said was really rude.
  你要注意你的话语。你刚刚说的话很没礼貌。