I'm a little short but I was doing OK. But I did do some research when I saw this book last year.
虽然款项很少,但是我还做得不错,我去年看这本书的时候,做了些调查。
普林斯顿公开课 - 人性课程节选
应用推荐
模块上移
模块下移
不移动