While in real life you hardly talk to strangers, here you get it as a social norm.

在现实生活中你几乎很少和陌生人说话，而这种事在这里成为一种社交规范。

Second, the law is one kind of social norm which adjusts the benefit relations of subjects.

第二、法是调整主体间利益关系的社会规范；

The practical norm is a social norm that guides and rules the subjects practical activities.

实践规范是对实践主体的现实实践活动予以示导、制约的社会规范。

Conforming with or constituting a norm or standard or level or type or social norm; not abnormal.

符合或构成一个准则、标准、水平或形式或社会规范的；不反常的。

One common source of unhappiness for people is the failure to accept that some social norm has changed.

不快乐的一个普遍来源是人们无法接受某种社会规范变化。