口語交際:那是人類的天性 That’s human being

    A：Mrs. Smith, you are always worried about your children.
    史密斯太太，你總是擔(dān)心自己的孩子。
    B：They are my own flesh and blood. It’s hard for me to see them suffering.
    他們是我的親生骨肉，我不忍看到他們受苦。
    A：That’s human nature.
    那是人類的天性。