另外一个元素all，表示这样的约束：组中的所有子元素可以同时出现一次，或者都不出现，它们可以按任意的顺序出现。

Another element, all, expresses the constraint that all child elements in the group may appear once or not at all, and they may appear in any order.

youdao

第五个按扭是给你唱歌派用场的，只需轻轻一按，铅笔芯就能变成麦克风，让你从作业中走出来放松自己，可以得到一种说不出的欢乐。

The fifth button is for you to sing, case, slightly press pencil lead can become a microphone, let you go out to relax from the job, can get a kind of unspeakable joy.

youdao

所以你也不在意角色表演上有些会随着时间变化的细节，如果不按顺序播就看不出来了？

So you're not concerned if there is a small character moment that you would play off in one show, and then followed through in another, even though they are shown out of context?

youdao

Not only in terms of the economic decisions that they can be make, but also in terms of people are able to throw their ways around in way the constitutions never authorize them to do.

不仅仅限于,他们可能做出的经济决定，还在于,人们可以不按常理出牌,以宪法,不允许的方式做事情。

斯坦福公开课 - 经济学课程节选