| 短语 | know something for a fact |
| 释义 | know something for a fact be aware of something that is irrefutable or beyond doubt 确切知道： I know for a fact that he can't speak a word of Japanese. 我确切知道他一句日语也不会说。 |
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英语短语词组词典共收录525608条英汉双解短语词组词条，基本涵盖了全部常用短语词组的翻译及用法，是英语学习的有利工具。