【译文】滋润养育自身一定要用诚敬，求学的目的就在于获得知识和学问。

别让别人的意见淹没了你内心的声音。

The true value of stone lies in how we transform it for human use.

Our ambition is to be the responsible energy major, and that means producing more energy with fewer emissions.

The truth is, we are all waiting to be told who we are.

圆的周长大于任何内接等边多边形的周长，小于任何外切多边形的周长。