This was a very short visit, but it plunged the little prince into deep dejection.

安全不是产品的附加功能，而是基石。

对验证的渴望是可以理解的，但并不总能得到满足。

Chemistry is the central science that connects physics and biology.

Every fish returned to the sea today is an investment in tomorrow's catch.

地球不是一个刚体，而是一个动态系统，其中对流起着基本作用。