词汇 |
hard and fast |
释义 |
(especially after a negative尤用于否定词后) that cannot be changed in any circumstances板上钉钉;不容更改- There are no hard and fast rules about this.这事没有什么硬性的规定。
- This situation isn’t hard and fast.这种情况并不困难。
See also fast | hard |
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