"The recession must not, cannot and will not be used as an excuse for going back on our promise on aid,".

VOA: standard.2009.04.09

It's important in Darwinian terms to have it in the back of our minds, and that's what Tynjanov is insisting on.

它是达尔文主义的重要特征，也是提尼亚诺夫坚持的。

耶鲁公开课 - 文学理论导论课程节选

This will be our last Friday lecture ever; back on Mondays and Wednesdays hereafter.

这将是我们周五最后一个演讲，以后会回到周一,和周三上课。

哈佛公开课 - 计算机科学课程节选

We're going to stand up and push back and call on the Federal government to secure our borders."

VOA: standard.2010.05.08

now let's go back to each of our individual steps and look, based on what we know about how to evaluate the thermodynamic changes that take place here, let's look at each one of the steps and see what happens.

让我们回到循环中的每一步,然后看看，基于我们已有的知识,来估计一下,发生的热力学变化，让我们看,循环中的每一步发生了什么。

麻省理工公开课 - 热力学与动力学课程节选

"Our plan is based on the belief that fast-acting tax relief is the most effective way to put our economy back on track,"

VOA: standard.2009.10.03

They'll keep trying to get it going, but maybe we should move on with our lives here while this is happening, and we'll click it back at the end, and if we have a nice set up at any point, I'll just stop and we'll go back and we'll look at it again.

它们会一直让它保持运动，但是或许我们应该,在这个过程中离开一会儿，我们在最后点击它，如果我们在每一个点,都有一个好的装置，我就会停止然后,返回再去看看它。

麻省理工公开课 - 化学原理课程节选

"It is certainly our hope that based on discussions in Pyongyang that the six-party talks resume expeditiously and we can get back to important work of denuclearization."

VOA: standard.2009.12.11

You can see this region here is going to develop into one of the upper limbs, the arms here and the back is different from the front, the spinal cord is developing in the back, whereas, the structures that become our intestinal tract is developing on the other surface.

你能看到这个区域,将会发育成为上肢,这里是手臂,而且身体前后也有不同,脊椎正在后背发育,另外,会成为我们肠管的结构,也在另一个表面发育着

耶鲁公开课 - 生物医学工程探索课程节选

"Jack's challenge over the next few years is to use his extraordinary skill and experience to cut down that deficit and put our nation back on a fiscally responsible path.

VOA: standard.2010.07.13

"It would be unethical for us to turn our back on these people and not conduct the research that is so desperately needed to develop the drugs to treat these diseases and the vaccines to prevent them in the future."

VOA: standard.2010.02.16

"I was at the USA House the other day talking to somebody about our student group, and I went on after our discussion, and then he came back and he came over and shook my hand and said how impressed he was with what we were doing."

VOA: standard.2010.02.26