啞口無言

yákǒuwúyán

be left without an argument; be reduced to silence; be rendered speechless

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ya3 kou3 wu2 yan2

dumbstruck and unable to reply (idiom); left speechless, at a loss for words

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啞口無言|哑口无言 [yǎ kǒu wú yán] ► dumbstruck and unable to reply (idiom); left speechless ► at a loss for words