I doubt whether even members of one family, united as they are by strong mutual affection, are ever motivated by pure altruism in their dealings with one another.

可是，即使是在彼此十分相爱的家庭成员之间，我认为纯 粹利他的动机也是不存在的。

youdao

I doubt whether even members of one family, united as they are by strong mutual affection, are ever motivated by pure altruism in their dealings with one another.

可是，即使是在彼此十分相爱的家庭成员之间，我认为纯 粹利他的动机也是不存在的。

youdao