put up or shut up idiom informal
采取行动（如果你说某人应“采取行动”或“闭嘴”，你的意思是说，他们要么采取行动以便做他们所说的事情，或停止谈论这些事情）
If you say someone should put up or shut up, you mean that they should either take action in order to do what they have been talking about, or stop talking about it.
You keep saying you're going to ask her out. Well, put up or shut up. 你老是说要叫她出来。好吧，采取行动吧，否则就闭嘴。