Strengthen international cooperation to promote the improvement of technology and management in the coal industry.

To be happy, I must have my books and a piece of sky.

“损失厌恶”的概念在决策中起着关键作用，其中失去的痛苦在心理上是获得快乐的两倍。

"The past is always tense, the future perfect."

The power of the state should be used to protect the rights of the individual, not to suppress them.

水产养殖的创新必须在经济增长和环境管理之间取得平衡。