Pakistan launched a major offensive in and around Swat in late April to check the Taliban advances in the northwestern mountainous valley, once a popular tourist resort.

VOA: standard.2009.09.11

Do I have two yes answers if you wanna check two conditions at once? You know, this might seem to be a bit of a new context for some of you but consider a typical website.

我能不能对两个条件同时判断,来看看它们是不是都为真？,这些概念可能对你们中一些人有点新颖,那么就考虑一个典型网站。

哈佛公开课 - 计算机科学课程节选

chickens OK, and then once I've got that, well, notice: I can then check to see, did I return that special symbol none?

第二部分是：,现在一旦我获得了这两个值，注意，我将再检查一下？

麻省理工公开课 - 计算机科学及编程导论课程节选