形容词
中文翻译：紧闭的
同义词：
['closed-mouth', 'tight-lipped']
例句：
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1.The detective was close-mouthed about the details of the case.
侦探对案件的细节守口如瓶。
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2. The old man was close-mouthed when he spoke to his grandson.
老人和孙子说话时总是紧闭着嘴。
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3. The scientist kept his research findings close-mouthed until they were published.
科学家在发表研究成果之前一直保守秘密。