但是到底什么样的技能需要这样一种练习才能进步呢？

But what kinds of proficiencies lend themselves to this sort of improvement?

youdao

只有这样，社会才能进步。

Only in this way, society can progress.

youdao

只有这样，社会才能进步。

Only in this way, society can progress.

youdao