接收请求后，仅当满足条件时，原则才有效。

Once receiving a request, a principle is valid only when its condition is satisfied.

youdao

我的语法当其条件允许时找到了一个 ABC，但是当只能找到 A 或者 AB 时，也能满足于此。

My grammar finds an ABC when it is available, but settles for an A, or AB, when that is all there is to find.

youdao

当这些条件得到满足后，将触发一个事件。

When these conditions are met, an event is fired.

youdao