利人

xīn lǐ xué jiā rèn wéi xiàng wú sī hú lì rén zhī lèi de tè zhēng yǐ jīng chéng wéi wǒ men de jī yīn zǔ chéng bù fen

心理学家认为，像无私和利人之类的特征已经成为我们的基因组成部分。

Psychologists believe that traits such as selflessness and altruism have become part of our genetic make-up.