a hard and fast rule的意思|示意

Although this is not a hard and fast rule, releasing the whole application in the same way each time tends to make the process more repeatable and prevents problems with missing files.

虽然这不是硬性规定，每次以同样的方式发布全部的应用程序趋向于使过程更加可重复并且防止文件丢失所导致的问题。

At our house there's a hard and fast rule against us kids hanging out downtown late at night.

对于我们这些孩子们晚上在市区里和朋友一起玩，我们家有一条不可动摇的规则。

But that's not a hard and fast rule.

但这并不是硬性规定。

Our factory has a hard and fast rule against smoking.

我们工厂严格规定不许吸烟。

There isn't a hard and fast number that has been documented because it can vary with the type of workload, but as a rule of thumb, having more than 1 GB does not appear to be worthwhile.

但不存在一个确凿通用的数据，因为缓冲池的最佳大小随不同的负载类型变化，但根据经验，当缓冲池大于 1 GB 时往往不是什么好事。

It's not a hard and fast rule but I find pixel drawings look best when they have black Outlines.

这不是一个硬性的规则，但我觉得最好看的像素图时，有黑色的轮廓。