call someone's bluff
US /kɔl ˈsʌm.wʌnz blʌf/
UK /kɔl ˈsʌm.wʌnz blʌf/
1.
揭穿某人的虚张声势, 挑战某人
to challenge someone to prove that what they are saying is true, or to show that they are not afraid to do something that they have threatened to do
:
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She threatened to quit, but I decided to call her bluff and see if she would actually do it.
她威胁要辞职，但我决定揭穿她的虚张声势，看看她是否真的会这样做。
•
The politician made a bold claim, and the journalists decided to call his bluff by demanding evidence.
这位政客发表了一个大胆的声明，记者们决定通过要求证据来揭穿他的虚张声势。