The problem with words is that you never know whose mouths they have been in.

自满是医学进步的敌人。

最好的肥料是农民的影子。

The sustainable development of the coal industry requires the coordinated efforts of policy, technology, and the market.

说到底，它是你和上帝之间的事，而决不是你和他人之间的事。

书籍是人类经验的地图。

你的水无法流动是因为我。