Almost one in three Americans in their mid-20's now fall into this group, up from one in five in the late 1960's, when the Census Bureau began keeping such data.

20岁左右的美国人几乎有三分之一成为这个群体中的一员，高于20世纪60年代的五分之一，那时人口调查局开始保存这一数据。

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It's probably a bit late to call this one "getting out of hand, " but, well, it is.

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If not, they might want to exchange this defective product for a better one -- before it's too late.

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To understand what a departure this is from past views of slum life one must go back to the late 19th century's most famous chronicler of the poor sides of town, Jacob Riis.

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