hard-and-fast

There 's no hard-and-fast rule .

并无定规。

There are no hard-and-fast rules for getting a job in television .

干电视这一行没有一成不变的规则。

The teacher said that there was a hard-and-fast rule against smoking in school .

教师说学校有严格的禁止吸烟的规定。

His parents have no hard-and-fast rules about how late he can stay out .

他的父母对他在外可以逗留多晚并没有严格的规定。

There is no hard-and-fast rule for the ratio because it depends on the queries involved .

对于这个比率，并没有什么严格的规则，因为这依赖于所涉及的查询。

There are no hard-and-fast rules of procedure for securing intelligence by infiltration through enemy lines .

没有严格的规定越过敌人防线获得情报的步骤。

There are no hard-and-fast rules for success .

通往成功没有什么一成不变的规则。

Given the difficulty of judging brand names isolated from performance , are there any hard-and-fast rules for naming a service company ?

考虑到不从表现来判断品牌好坏的难处，有无专用而奏效的被用来指定一家服务公司的惯例？

In practice , there might be both analogue and digital aspects to a machine . There was not a hard-and-fast distinction .

实际上，机器还是模拟和数字的混合，这两者没有明显的界线。

Some officials want to avoid hard-and-fast thresholds , in part because they have doubts about the reliability of indicators like the jobless rate .

一些官员希望避免采用一成不变的前瞻指引，一定程度上是因为他们对失业率等指标的可靠性抱有疑虑。

There is no hard-and-fast rule for doing this , but adopting a proper link sequence for dependent shared libraries should work most of the time .

关于这一点，没有一成不变的规则，不过，为相关的共享库采用适当的链接顺序大部分时候都会管用。

Keep in mind that not all recommendations are appropriate for all situations , and that they are offered as guidelines , not hard-and-fast rules .

务必记住，并非所有的建议都适合于所有情形，并且这些建议是作为指导原则而不是作为硬性规则来提供的。

Finally , he writes his definitions , following the hard-and-fast rule that each definition must be based on what the quotations in front of him reveal about the meaning of the word .

最后词典编者写出每个义项的定义，在下定义时，编者必须遵守这样一条不容改变的铁的规则：那就是每个义项的定义编者必须根据摆在面前那些卡片上的例句所含有的该词的词义来写。