When Roland Fryer was about 15, a friend asked him what he would be doing when he was 30.

当罗兰弗•弗莱尔15岁的时候，他的一个朋友问他长到30岁的时候会做什么。

youdao

Harry:... everybody has these carb cravings. What should you be doing when you have carb cravings?

哈里：……每个人都有对这些碳水化合物的渴望。当你产生对碳水化合物的渴望时，你应该怎么做？

youdao

Still, after working there five years, I was haunted by doubt . Is this what I want to be doing when I'm 50?

然而，在那里工作了五年之后，我头脑中又萦绕起一丝疑虑：难道这就是我想一直做到50岁的工作吗？

youdao

And the file says workers responsible for boating and beach safety may be doing a better job of warning people when sharks are seen.

VOA: special.2009.06.16

During this part, when you're doing a quarter of a circle, this is supposed to be a quarter of a circle.

在这部分,当你沿着四分之一圆运动,这就是个一个圆的四分之一

耶鲁公开课 - 基础物理课程节选

You might be winded doing it the second way, but when you get to the top and you are at the 60th story your gravitational potential is independent of how you got there.

对于走路你可能很抓狂，但你一旦到了顶层,你就是在第60层,你的重力势能,与你如何到达那里无关。

麻省理工公开课 - 固态化学导论课程节选

Ron Johnson is doing exactly what a CEO should be doing when put in charge of a moribund company.

FORBES: Don't Write off JC Penney Just Yet.

Then there's a mini-question time on women and equalities, for 20 minutes, before the Leader of the House, Andrew Lansley, announces what MPs will be doing when they return from their half-term break on 25 February.

BBC: Week ahead

You should be doing that when there is a recovery versus doing that now.

WHITEHOUSE: Press Briefing