解释:不通过学习而能自己知道的,不去请教他人而能自己通晓的,从古到今没有这样的事。
在金融领域,唯一的免费午餐是分散投资。
The theory of automorphic forms is a central subject in modern number theory.
The most successful products are those that anticipate needs people didn't know they had.