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The best form of advertising is probably word of mouth advertising which occurs when people tell their friends about the benefits of products or services that they have purchased.

最好的广告形式可能是口碑营销。当人们将所购买的产品或服务的好处告诉他们的朋友时，口碑营销就出现了。

youdao

The best form of advertising is probably word-of-mouth advertising which occurs when people tell their friends about the benefits of products or services that they have purchased.

最好的广告形式可能是口口相传的广告，当人们将所购买的产品或服务的好处告诉他们的朋友时，这种广告就出现了。

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It occurs as a result of something underlying which can be potentially serious."

VOA: special.2009.09.02

I was talking last time about the concept of election or choice, God's choice of Israel, Israel as the chosen one, which occurs for the first time in the Book of Deuteronomy.

我上节课提到了“选择“这一概念，上帝选择了以色列，以色列成为选民，这一概念第一次出现在《申命记》中。

耶鲁公开课 - 旧约导论课程节选

Now the two things to notice about this are the high spike that you have out here which occurs very rapidly and then the rapid decline in blood sugar, and insulin is involved in this whole reaction.

有两个需要注意的事情是,你们在这看到的急剧变化的曲线代表着,迅速上升和迅速下降的血糖,另外胰岛素也随之发生变化

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

The real disaster is the slow moving train wreck which occurs over several months.

FORBES: Should You Be Worried About Europe's Train Wreck?

They come in three pairs, only the least massive of which occurs naturally at post-first-ten-microseconds temperatures.

ECONOMIST: Particle physics makes sense, but it assumes too much

So if your thyroid is off, which occurs in more women than men, that could lead to anxiety.

CNN: Why women worry, and what to do about it