知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 “A one that in no way designed a slip-up hardly ever tried out nearly anything new.” – Albert Einstein “Shoot for your moon. Even when you overlook, you are going to land among the stars.” – Norman Vincent Peale “Your time and energy is restricted, don't waste https://share.evernote.com/note/da337949-239b-da24-2f80-0e6d723ea9bf