Because before this a few similar websites appear too much insalubrious content and come a howler, FACEBOOK must draw this one lesson.
此前一些类似的网站因为过多出现不健康内容而遭到失败，FACEBOOK必须吸取这一教训。
Because before this a few similar websites appear too much insalubrious content and come a howler, FACEBOOK must draw this one lesson.
此前一些类似的网站因为过多出现不健康内容而遭到失败，FACEBOOK必须吸取这一教训。
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