He noted that a baked potato is not high in fat, but it becomes fatty when people add sour cream and butter to it.

VOA: special.2011.07.05

And I think eventually that question would gnaw at you and sour and override the pleasure.

最终那个疑问会折磨你,飞升超越那种快感。

耶鲁公开课 - 死亡课程节选

Sweet or sour or... you know, all kinds.

甜的，酸的，或者……任何东西。

在切尔西超市 - SpeakingMax英语口语达人

Sour cherries, sometimes called tart cherries, are used in foods and drinks.

VOA: special.2010.02.23

And this is typical enough but, despite all of the, sort of, sour things I just said about Freud, the big idea, the importance of the dynamic unconscious, remains intact.

这就是通常的情况了,尽管我刚才说的都是些，关于弗洛伊德的负面的东西，但总体来看，动力无意识的重要性仍然不可撼动。

耶鲁公开课 - 心理学导论课程节选

The state of Michigan is the nation's top producer of sour cherries.

VOA: special.2010.02.23

The two major kinds of cherries are sweet and sour.

VOA: special.2010.02.23

"If there's one lesson that we've learned, it's that unfettered market where people are taking huge risks and expecting taxpayers to bail them out when things go sour is simply not acceptable."

VOA: special.2010.04.16

It means "sour cabbage" in German.

VOA: special.2009.03.03

Investor sentiment continues to sour over concerns that European countries are not doing enough to tackle their national debt.

VOA: standard.2010.05.17