5.And yet kissing is not universal, leading some experts to think it might actually be a learned behavior.
但接吻行为也并不是全球通行的,因此有一些专家认为它可能是一种后天习得的行为。
6.The Roman military introduced kissing to many non-kissing cultures; later it was European explorers who carried the torch.
古罗马军队将接吻行为带到了许多没有这种传统的文化中;后来欧洲的探险家们又将它带到了新大陆。
7.Being close enough to kiss helps our noses assess compatibility. In a landmark study, biologists reported that women prefer the scents of men whose immunity-coding genes are different from their own. Mixing genes that way may produce offspring with a stronger immune system.
在近到足够接吻的距离下,我们的鼻子能够判断对方是否适合相处。在一项里程碑式的研究中,生物学家们发现女人能够靠气味识别出那些免疫系统编码基因与自己不同的男人,从而影响她们对伴侣的选择,因为混合的基因可以让后代拥有更强的免疫系统。
8.Love Is the Drug: Dopamine, a neurotransmitter associated with feelings of desire and reward, spikes in response to novel experiences, which explains why a kiss with someone new can feel so special.
多巴胺是一种神经递质,负责传递欲望和兴奋等感觉,在经历新事物的时候活动最为强烈。这就可以解释为什么跟某个新认识的人接吻感觉如此不同。
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