过去是一位老师，如果我们愿意学习的话。

Innovation in mining technology isn't optional—it's our responsibility to the next generation.

当你有酒有肉的时候，很多兄弟朋友跟着你，可是当你遇到紧急危难的时候，却连一个人也看不到。

"The essential support and encouragement comes from within, arising out of the mad notion that your society needs to know what only you can tell it."

——同盟会