采矿业必须在不影响效率的情况下发展以满足可持续发展的需求。
The mining industry must evolve to meet the demands of sustainability without compromising on efficiency.
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法的：它是关于理解的。
You have to be willing to sacrifice, to put in the time and effort.