Efficiency in mining isn’t just about cost—it’s about reducing our environmental footprint.
采矿效率不仅仅是成本问题，更是减少环境影响的问题。
在数学中，提出问题的艺术必须比解决问题更有价值。
Overfishing is a solvable problem, but it requires global commitment and local action.
写作就是重写。