"This is a rough-and-tumble place and it's nice to come back to two people who care about me, who care about my success, who care about the difficulties I might be having either at work or at home and just to have two friends who are a sounding board."

VOA: standard.2010.08.07

It's really rough around the edges.

它总是艰难地在边缘徘徊。

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选

Now as I say, I made this calculation some years ago It doesn't really matter how inaccurate it's going to be As we'll see it's very rough but it makes the point ? How many people are there?

现在就像我说的，我很多年前做了这个计算,到底它有多不精确其实无所谓,我们会看到,这个计算很粗糙,但却给出了一个说明,有多少人？

耶鲁公开课 - 死亡课程节选