私自

Don't be selfish.

不要利。

She is an essentially selfish person.

她本质上是个利的人。

In an acquisitive society the form that selfishness predominantly takes is monetary greed.

在一个贪婪的社会里, 贪财是利的突出表现形式。

She is a selfish person.

她是一个利的人。

It, however, had thought,"With that money you can buy yourself a piece of zwieback," and had kept the farthings, hiding them in the cracks in the floor.

“我可以用它己买块饼乾。”于是就留下了钱，藏在了地板缝里。

The strength of altruism lies in the fact that altruistic acts undeniably occur in any society and that moral codes universally advocate altruism or benevolence and condemn selfishness.

毫无疑问,利他主义存在于任何社会,而且道德准也普遍提倡利他主义或善,而谴责利。这也正是利他主义具有强大生命力的原因。