经济学中的性别差距不仅仅是数字问题；它是关于谁的故事被讲述的问题。

The intersection of form and function is where great design happens.

I don't sing because I'm happy; I'm happy because I sing.

To promote the high-quality development of the coal industry, we must rely on technological innovation and intelligent upgrading.

If you're not stubborn， you'll give up on experiments too soon. And if you're not flexible， you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.