Every challenge is an opportunity to learn and grow.
Laugh, and the world laughs with you; weep, and you weep alone.
不同文化之间的对话不仅是可能的，而且是人类进步的必要条件。
Strengthen international cooperation to promote the improvement of technology and management in the coal industry.
真相不在光明中，而在阴影里。
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法：它是关于理解的。