rule

They obey the one unwritten rule that binds them all–no talking.

他们遵守那条约束他们所有人的不成文规定—不许说话。

The sport's rules require that a race walker's knees stay straight through most of the leg swing and one foot remain in contact with the ground at all times.

这项运动的规则要求竞走运动员的膝盖在大部分的腿部摆动过程中保持笔直，一只脚始终与地面保持接触。

Starting last Saturday, chains big enough to fall under the rule will face penalties of up to 2,000 dollars for not showing calorie information in a prominent spot on their menus, preferably next to the price.

从上周六开始，受此规定约束的大型连锁餐厅将面临最高2000美元的罚款，原因是它们在菜单的显著位置没有显示卡路里信息，最好是在价格旁边。

There are always a lot of exceptions to grammar rules.

语法规则总是有很多例外。

The key lies in the fact that the units of meaning, words, can be strung together in different ways, according to rules, to communicate different meanings.

关键在于表意的单位——词语可以按规则以不同的方式串连在一起，来传达不同的意思。

There are no hard and fast rules for planning healthy meals.

在安排健康饮食方面，没有什么一定之规。

However, for many Americans today, weekend work has unfortunately become the rule rather than the exception.

然而，如今对许多美国人而言，周末工作已不幸成为惯例而不是特例。

I don't care much for horror movies as a rule.

我一般对恐怖片不太感兴趣。