| 单词 | hard-and-fast rule |
| 释义 | hard-and-fast rule WordReference English-Chinese Dictionary © 2019:主要翻译英语中文hard-and-fast rule nnoun: Refers to person, place, thing, quality, etc. (rule: unbreakable)不能变通的规则 硬性规则 There's no hard-and-fast rule about what makes good picnic food. |
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