每一种东西的价格都会因时间和地点的不同而涨落；每一次这样的变化都会改变货币的购买力。

I’d take it manfully, and be respected if I couldn’t be loved.

A great novel is one that changes the way we see the world.

Leadership in mining means prioritizing safety, efficiency, and long-term community impact.

置信区间理论提供了一种不同于点估计和假设检验的估计未知参数的方法。