理解的第一个迹象是想死。

The lightning that precedes the thunder is a common image of the warnings that come before calamity.

我对这场战争了解的不多，但我知道美国的很多年轻人都参与了这场战争。

"Empathy is the key to innovation, as it allows us to understand and address the real needs of people."

最好的性能改进是从非工作状态到工作状态的转变。