"Your most unhappy customers are your greatest source of learning."
你最不满意的客户是你最大的学习来源。
最大的满足是知道你已全力以赴。
The success of any political system depends on its ability to deliver both prosperity and justice.
教学不是传递知识,而是为知识的产生或构建创造可能性。
The future of coal industry lies in clean and efficient utilization.