Innovation in mining technology is what will keep the industry alive in the next century.

The past is a foreign country; they do things differently there.

数学是逻辑思想的诗歌。

我不记仇，我只记得事实。

处于困境中的人往往只关注自己的问题，而解决问题的途径通常在于你如何解决别人的问题。