闭口无言[bì kǒu wú yán]
词典remain silent：默默无言。
词典be left speechless：闭口无言。
词典be tongue-tied：噤口不言；闭口无言。
词典close one's lips and say not a word：闭口无言。
闭口无言[bì kǒu wú yán]
remain silent; be left speechless; be tongue-tied; close one's lips and say not a word; keep one's mouth shut; keep silent