Sustainable development is not an option, but a necessity for the coal sector.

The best performance improvement is the transition from the nonworking state to the working state.

The supreme question about a work of art is out of how deep a life does it spring.

如果有人邀请你上一艘火箭船，不要问坐哪个位置，上去就行了。

最成功的城市空间是那些促进人类互动和联系的空间。