全球能源变革中,中国煤炭行业要有自己的声音和贡献。
If you tell the truth, you don't have to remember anything.
当一个人情绪低落的时候,他会格外地喜欢看日落。
Life is like riding a bicycle. To keep your balance, you must keep moving.
The only way to learn mathematics is to do mathematics.