单词	hard-and-fast
释义	hard-and-fastˌhard-and-ˈfast adjective [only before noun] Examples EXAMPLES FROM THE CORPUS Clearly there are dangers involved in drawing a hard-and-fast line between the two principles of participation and identity. Mrs. Bottomley With respect to my hon. Friend, I do not believe that it is ever possible to cut a hard-and-fast line. Similarly, it is not possible for him either to give a hard-and-fast definition of Truth. There is no hard-and-fast divide between water-breathing and air-breathing animals. Collocations COLLOCATIONS FROM THE ENTRY► hard-and-fast rules  It is impossible to give hard-and-fast rules, but here are some points to consider. clear, definite, and always able to be used:  It is impossible to give hard-and-fast rules, but here are some points to consider.
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