| 词汇 | no hard and fast rules |
| 释义 | Idiom no hard and fast rules if there are no hard and fast rules, there are no clear rules which you must obey.There are no hard and fast rules about how much weight you can safely gain in pregnancy. no hard and fast rulesNo rules or guidelines that are binding, rigidly adhered to, and/or clearly defined. The manager has no hard and fast rules, so he has no way of keeping his employees in line. Unfortunately, the drug is so still so new that there aren't really any hard and fast rules about proper dosage. |
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