世界上充满了这样的人，他们对一个令人满意的未来的概念，实际上是对理想化过去的回归。

Innovation in mining technology isn't just about efficiency—it's about safety and sustainability.

The key to trading success is to have a clear strategy and execute it consistently.

化学的进步以新元素的发现及其性质的测定为标志。