The transformation of the coal industry must rely on technological leadership, and green development is the only way forward.
The mind is everything. What you think, you become.
The beauty of mathematics is that it allows us to see patterns and structures in the world that are not immediately obvious.
If you shed tears when you miss the sun,you also miss the stars.
一个组织的产品和服务的质量是其管理质量的直接反映。