You have to be passionate about what you do; otherwise, you will never excel.

教育是我们所有能力的和谐发展。

挑战让我更强大。

煤炭行业是美国能源独立的支柱，已经持续了几代人。

Where I am, I don't know, I'll never know, in the silence you don't know, you must go on, I can't go on, I'll go on.