hard and fast rule

硬性的规定

精确的标准；固定规则

hard and faster───又硬又快

hard and fast───严格的；固定不变的

hard and fastest───又硬又快

hard-and-fast───严格的；固定不变的

hard-and-fastness───坚硬牢固

hard as nails───铁石心肠，冷酷无情

hard disk drive───[计]硬盘驱动器；硬碟机

hard paste───硬质粘土

thick and fast───大量而急速地；频频

Our factory has a hard and fast rule against smoking.───我们工厂严格规定不许吸烟.

There is no hard and fast rule about the use of the terms dermatitis and eczema.───关于皮炎和湿疹两词的应用并无固定(严格)的规则.

There is no hard and fast rule on how a life handbook should be; it is up to your preference.───人生指南手册应该怎么样，这个没有硬性规定；它取决于你的喜好。

But that's not a hard and fast rule.───但这并不是硬性规定。

There's no hard - and - fast rule.───并无定规.

There is no hard and fast rule here, and every application will differ somewhat.───这里没有一尘不变的规则，所有的应用程序都会有点不同。

We must make it a hard and fast rule against smoking in the office.───我们必须严格规定:办公室里不准吸烟.

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.

Our factory has a hard and fast rule against smoking.

There is no hard and fast rule as to what constitutes the transfer of a business as a going concern.

There is no hard and fast rule about dilution.

We must make it a hard and fast rule against smoking in the office.

It's difficult to give a hard and fast rule.

There is no hard and fast rule: once again, the test is that of ordinary readers.

In our office building there is a hard and fast rule against smoking.

However, this is not a hard and fast rule and there are numerous exceptions.