学习贵在专一，不以涉猎广泛为能。
The city is the greatest invention of mankind.
如果你想成功，你必须准备好受苦。
"You have to put in the hours because there’s always something which you can improve."
Leadership in mining means making tough decisions for long-term benefits.
技术创新是企业发展的根本动力，没有创新就没有未来。