1. Is there a hard-and-fast line between good and evil? 这是区分美好与邪恶的基准线吗？
2. We need to make, therefore, a hard-and-fast distinction not only between work and play but equally between active play and passive entertainment. 因此，我们需要不仅对工作和娱乐作出严格的区别，而且是同样严格地区分主动的玩乐和被动的消遣。
3. At the press conference to unveil the document Mr Volcker was typically modest, insisting it was more an agenda for discussion than a hard-and-fast blueprint . 在新闻发布会上，V郑重地揭示了这份文件，并坚称这与其说是一份强硬而迅速的蓝图不如说是对讨论的一个议程设定。
