| 短语 | hard and fast |
| 释义 | hard and fast [usu. with negative](of a rule or a distinction made) fixed and definitive （规则, 差别）不可更动的; 无法改变的。 ˌhard and ˈfast(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 areno hard and fast rulesabout this.这事没有什么硬性的规定。hard and fastnot to be broken or changed; fixed; strict 严格的；非遵守不可的；不能变动的 * It's a hard and fast rule; everyone must obey it. 这是个严格的规则，大家都必须服从。 * The traffic regulations must be observed in a hard and fast way; any negligence would cause an accident. 交通规则必须严格遵守，任何疏忽都会造成事故。 * The teacher said that there was a hard and fast rule against smoking in the school. 老师说校方规定不准抽烟，任何人不允许违反这条规定。 |
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