人类生活最主要关心的事是什么？

'What is human life's chief concern?

youdao

他能怎样帮助朋友是他主要关心的事。

How he could assist his friend was his chief concern.

youdao

他能怎样帮助朋友是他主要关心的事。

How he could assist his friend was his chief concern.

youdao