poker face
US /ˈpoʊkər feɪs/
UK /ˈpoʊkər feɪs/
1.
扑克脸, 面无表情
an impassive expression that hides one's true feelings or intentions
:
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Despite the bad news, she maintained a perfect poker face.
尽管有坏消息，她仍然保持着完美的扑克脸。
•
He tried to keep a poker face during the negotiation, but I could see his excitement.
他在谈判中试图保持扑克脸，但我能看出他的兴奋。