The world is full of obvious things which nobody by any chance ever observes.
我父亲总是教导我:关心和分享。这就是我们举办公开课的原因。我唯一能做的就是尝试回馈。
The sustainable development of the coal industry requires the coordinated efforts of policy, technology, and the market.
预测未来的最好方式就是创造未来。