O-8：one's own flesh and blood 骨肉至亲

　　A:Mrs, Smith, you are always worried about your children.

　　A:史密斯太太，你总是牵挂着孩子。

　　B:They're my own flesh and blood. It's hard for me to see them suffering.

　　B:他们都是我的骨肉，我不忍看他们受苦。

　　A:That's human nature.

　　A:那是人的天性。