The core of the energy revolution is cleanliness and efficiency, and the coal industry must actively adapt to this trend.
Mathematics is the music of reason.
You can't cut corners on ethics and expect long-term success.
中心地的等級反映了所提供的商品和服務(wù)的等級。
在任何比賽中，自信都是關(guān)鍵。
There is nothing eternal in us.
A good mechanism design aligns individual incentives with social goals.
You are easy to pretend to care about.
The best artworks are those that disappear into life.