So, you end up going through life assuming that there are no black swans.

于是你从生活中得出结论,黑色的天鹅是不存在的

youdao

You've never seen a black swan. So, you end up going through life assuming that there are no black swans.

你从未看见过一种黑色的天鹅，所以你通过生活经验假设没有黑天鹅存在。

youdao

You see there are seven marks, and just for my own convenience, I have put there two black marks so that I can easily see the moment that I have to start my timer and the moment that I stop it.

这里有7个刻度，仅仅为了方便我，我要放两个黑色标记，这样我就很容易的，知道开始计时和，停止计时的时间。

youdao

So, you end up going through life assuming that there are no black swans.

于是你从生活中得出结论,黑色的天鹅是不存在的

耶鲁公开课 - 金融市场课程节选

October is over and before you know it Black Friday will be here, and so all the studios are preparing their holiday selection.

ENGADGET: Blu-ray releases on November 3rd 2009 HD

So, yes, Harlem is diversifying, but, you know, the overwhelming majority of the clients are black and male in this particular barbershop and in most barbershops in Harlem.

NPR: 'Cutting Edge': Inside Black Barbershops

The bottom line: Before you head out for the stores on Black Friday, ask yourself the three simple questions of intelligent shopping, so you make sure you are really getting a bargain.

FORBES: Are You Really Getting A Bargain Black Friday Deal?