Definition
这个成语的字面意思是 '用三根绳子封住嘴巴'，实际上用来形容人说话极其谨慎，或拒绝开口、闭口不谈。常用于形容在敏感场合或压力下保持沉默，不透露任何信息。
f.e.
to be extremely tight-lippedto seal one's lipsto say nothing (out of caution)
Examples
- ，三缄其口，。Guānyú zhè jiàn shì, tā sān jiān jī, yí gè zì yě bù kěn shuō.He is extremely tight-lipped about this matter and won't say a single word.
- ，三缄其口，。Miàn duì jìzhě de zhuīwèn, zhè wèi guānyuán sān jiān jī, jùjué fābiǎo rènhé pínglùn.Facing the reporters' questions, the official sealed his lips and refused to make any comments.
- ，三缄其口。Tā shēngxìng jǐnshèn, zài zhòngyào huìyì shàng zǒng shì sān jiān jī.He is cautious by nature and always keeps his mouth shut at important meetings.
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