Research by economists Kerwin Charles and Ming Luoh finds a similar effect when many otherwise-marriageable men end up in prison.
经济学家克尔温·查尔斯(Kerwin Charles)和Ming Luoh的研究发现，当许多本来到适婚年龄的男性最终入狱时，会出现类似的效应。
An article published last year in the Journal of Southern History reported that in 1860, there were 104 marriageable white men for every 100 white women; in 1870, that number dropped to 87.5.
南方历史日报去年发表的一篇文章指出，1860年，适婚的白人男性和女性比例是104比100，1870年这个数字就降到了87.5比100。
There are dozens of single men in Banzhushan village, perched high on a remote mountain peak in central Hunan province - and not one unattached woman of marriageable age.
盘踞在湖南省中部的遥远山峰上的板竹山村有很多的单身汉——同时没有一个适婚年龄的未婚的女性。
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