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 ahard and fast ruleagainst smoking.───我们工厂严格规定不许吸烟.

There is nohard and fast ruleabout 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 nohard and fast ruleon 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 ahard 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 nohard and fast rulehere, 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 ahard and fast ruleagainst 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 ahard and fast ruleagainst smoking.

There is nohard and fast ruleas to what constitutes the transfer of a business as a going concern.

There is nohard and fast ruleabout dilution.

We must make it ahard and fast ruleagainst smoking in the office.

It's difficult to give ahard and fast rule.

There is nohard and fast rule: once again, the test is that of ordinary readers.

In our office building there is ahard and fast ruleagainst smoking.

However, this is not ahard and fast ruleand there are numerous exceptions.