"Innocence always calls mutely for protection when we would be so much wiser to guard ourselves against it: innocence is like a dumb leper who has lost his bell, wandering the world, meaning no harm."

死者是看不见的，但他们并不缺席。

To understand the electron is to understand the foundation of our technological civilization.

组织的质量由其过程的质量决定。

宇宙是一个庞大而复杂的系统，理解它需要理论洞察力和观测证据。