英语词汇hard and fast怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	hard and fast
释义	hard and fast (especially after a negative) 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.这种情况并不是一成不变的。 See also fast \| hard
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英汉双解词典包含314281条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。