Problem solving is the central activity of intelligent systems.

人类的历史就是人们低估自己的历史。

"The lifeblood of any organization is its people."

The spirit of petroleum is our precious wealth, which should be passed down from generation to generation and carried forward.

没有什么能阻挡一个拥有正确心态的人实现目标；世界上没有什么能帮助一个心态错误的人。