nói có sách, mách có chứng
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Meaning
2 senses
▸
Advice to provide specific evidence when making a claim about something.
vi Khi muốn buộc tội ai đó, bạn nên nói có sách, mách có chứng.
en When you want to accuse someone, you should back your claims with evidence.
The practice of always using clear evidence to support an opinion.
vi Trong các cuộc tranh luận, anh ấy luôn nói có sách, mách có chứng.
en In debates, he always backs his claims with evidence.