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10 天
一夫一妻制在人类社会很常见,为何在动物界通常是一夫多妻?
在地球上众多生物种类中,人类社会所特有的一夫一妻制婚姻模式显得格外独特。当我们放眼望去,哺乳动物的世界里,一夫一妻制似乎是一种奢侈,更是一种稀缺。纵观数千种哺乳动物,它们中的绝大部分都选择了一夫多妻或多夫多妻的生活方式。狮子、老虎、猎豹等野生动物,以 ...
7 天
金赛研究所的研究结果显示,什么年龄段的人有更多的性行为
Un team di ricercatori del Kinsey Institute dell'Università dell'Indiana ha effettuato una indagine sulla sessualità: ecco a quale età si fa più sesso ...
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