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原標題：性俄罗斯xxxx高清

　　學?(xue)齡??(ling)前??(qian)兒??(er)童??(tong)10—13小??(xiao)時??(shi)　　人??(ren)的??(de)一??(yi)生??(sheng)中??(zhong)有??(you)三??(san)分??(fen)之??(zhi)一??(yi)左??(zuo)右?(you)的??(de)時??(shi)間??(jian)都??(dou)是??(shi)在?(zai)睡??(shui)眠??(mian)中??(zhong)度?(du)過??(guo)的??(de)??，覺??(jiao)沒??(mei)有?(you)睡??(shui)好??(hao)就??(jiu)會??(hui)讓??(rang)人??(ren)感??(gan)到??(dao)疲??(pi)憊??(bei)沮??(ju)喪??(sang)??，而??(er)長??(chang)期??(qi)睡?(shui)眠??(mian)不??(bu)好??(hao)還??(hai)會??(hui)給??(gei)人??(ren)們??(men)身??(shen)體??(ti)帶??(dai)來??(lai)一??(yi)系??(xi)列??(lie)的??(de)傷??(shang)害??(hai)??。??。