Innovation in mining technology is essential to meet the world's energy demands.
暴力不仅仅是身体上的;它嵌入在我们的系统和结构中。
质量从来不是偶然的;它始终是智慧努力的结果。
In mathematics, the art of proposing a question must be held of higher value than solving it.
我们都在寻找某样东西,但我们并不总是知道那是什么。