煤炭开采的创新不是要重新发明轮子，而是要让轮子更高效、更环保。

创新不在于技术，而在于思维方式。

世界是一本书，不旅行的人只读了一页。

The security dilemma is a fundamental feature of international politics, as states' efforts to increase their own security often decrease the security of others.

"In times of uncertainty, clear communication and decisive action are more important than ever."

失去一种语言就是失去一种看世界的方式。