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《皇家学会学报B》:新研究表明手淫是灵长类动物的一个古老特征 。信用:Unsplash/CC0公共领域神秘的地球uux.cn)据伦敦大学学院:手淫在动物界很普遍,但在包括人类在内的灵长类动物中尤其普遍。...
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