忍住不笑的英语短语怎么说
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"Keep a straight face" is a phrase that means to remain serious and not show any emotion or expression, especially when something is funny or amusing. For example, you might say "I tried to keep a straight face, but I couldn't help laughing when he told that joke." Another similar phrase is "hold back a smile," which means to try not to smile or laugh, even if something is amusing or funny.