在经济学中，魔鬼往往藏在细节里。

People can be divided into these types: strangers, acquaintances, familiar people, friends, and close friends. True friendship isn't about compliments to your face, but whether you're mentioned when they talk about friends behind your back.

气象学的未来在于观测、理论和应用的结合。

我的过去不能定义我，它使我更完善。