名词
中文翻译：死口
同义词：
['stifled mouth', 'mute mouth']
例句：
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1.The old man had a dead mouth and never spoke out of turn.
那位老人说话总是很谨慎，从不随意发言。
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2. The children were told to keep their dead mouths shut.
孩子们被告诫要闭嘴。
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3.He was accused of having a dead mouth and not speaking up for himself.
他被指控说话少，不为自己辩护。