The U.S.sealed the victory in the 72nd minute through Clint Dempsey, who pounced on a loose ball in front of the Spanish net and deposited it in the goal to double the American lead.

VOA: standard.2009.06.24

And just intuitively, when might you need to put a backslash in front of a double quote given the examples we've seen thus far?

凭直觉来看，迄今为止，你们什么时候,会用到\“呢？,举个例子？

哈佛公开课 - 计算机科学课程节选