20-04-21 这个世界上有两种人，一种是刺猬，另一种是狐狸。狐狸知道很多小事，也会很多东西。而刺猬，只知道一件大事。 There are two types of people in this world. The first type is like foxes. The other type is like hedgehogs. A fox knows many trivial things. And...