Why are uniforms so popular in the United States?

为什么制服在美国如此受欢迎？

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Why has this claim become so popular?

为什么这种说法会如此流行呢？

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Why, then, has this claim become so popular?

那么，为什么这种说法会如此流行呢？

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We asked competitor Chuck Mung from Portland,Oregon why he thinks air guitar is so popular.

VOA: special.2009.08.14

Why do you think Beverly Hills is so popular and famous?

你觉得为什么比佛利山庄这么热门这么有名呢？

演艺界起源地 - SpeakingMax英语口语达人

Why is football so popular in the United States?

为什么橄榄球在美国这么流行呢？

美国和美式足球 - SpeakingMax英语口语达人

So why is it so popular in talk radio land?

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So, who is Gina and why is she so popular?

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But part of the reason why Lin was so popular last year was his meteoric rise out of nowhere.

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