One must observe the rules.

我们任何人必须遵守规则。

youdao

So one must observe not only at the conscious level, but also at the hidden level, in the deep recesses of one's own mind.

因此，你不仅仅要观察意识层面，同样还有隐藏的层面，在自己意识深处。

youdao

But if you come at just any time, I shall never know at what hour my heart is to be ready to greet you... One must observe the proper rites...

但是如果你不管什么时候来，我将不晓得什么时候做心理准备…我们应该有节日。

youdao