Innovation in mining technology is essential to meet the world's energy demands.

When public speaking， pause frequently. Pause before you say something in a new way， pause after you have said something you believe is important， and pause as a relief to let listeners absorb details.

身份经济学是关于身份如何影响经济结果的。

最伟大的故事是那些提醒我们共同人性的故事。