20世纪20年代，短裙开始在欧洲和美国流行起来。

In the 1920s in Europe and America, short skirts became fashionable.

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但这说起来容易做起来难；在欧洲和美国，最大的农场可以覆盖数千英亩。

But this is easier said than done; the largest farms in Europe and the U.S. can cover thousands of acres.

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在欧洲和美国，核电厂的工人一年所受到的最高辐射量为50豪希弗。

In Europe and America, workers at nuclear plants are meant to receive at most 50msv a year.

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