动词
中文翻译：Unknown
同义词：
['keep silent', 'keep secret', 'keep mum', 'hold back']
例句：
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1. She kept her mouth shut and didn't say a word.
她紧闭着嘴，一句话也没说。
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2. The couple kept their marriage a secret from the world.
这对夫妇把他们的婚姻保密，不让世界知道。
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3. He kept his promise and never told anyone about it.
他遵守诺言，从未告诉任何人。