Of course, early life is certainly not the only influence on empathy: some of the most caring, altruistic people have suffered horribly neglectful and abusive childhoods.
当然,早期的生活绝不是影响情感发育的唯一因素:最感同身受的关怀、利他的人也曾遭受了可怕的疏忽大意被虐骂的童年时代。
The Dutch team not only replicated the earlier research but also found that people become more altruistic after they have been imitated.
荷兰团队不仅重复了以前的研究，还发现人们在被模仿之后会变得更慷慨无私。
Reciprocal altruistic behavior exists not only among organisms but also in the society, but it has been hard to explain the altruistic behavior of organisms to the classical natural selection theory.
互惠利他行为是生物有机体乃至人类社会普遍存在的一种现象，经典的自然选择学说难以解释生物有机体的这类行为。
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