The Maya poured the chocolate drink back and forth between two containers so that the liquid had a layer of bubbles,or foam.

VOA: special.2010.02.17

The cookies were going back and forth and back and forth and the hearts up and down, well, this thing that we had that called a loop last week with a forever block with a statement inside of it is simply gonna look a little something like this.

这些饼干人来来回回的移动,还有这些爱心们上上下下地漂浮,都用到我们上周提到过的循环结构,当然还有个声明在里面，就有点像屏幕上,显示的这样。

哈佛公开课 - 计算机科学课程节选

You throw out little slips of paper and they take turns going back and forth.

你如果将竞价写在纸上，他们会来来回回地传阅。

充满乐趣 - SpeakingMax英语口语达人

Rebecca Skloot tells this complex story by going back and forth between subjects and time periods.

VOA: special.2010.07.21

So you can imagine a bead with a wire going through it and the bead can only slide back and forth.

你可以想象一个穿在绳子上的珠子,小珠只能前后滑动

耶鲁公开课 - 基础物理课程节选

Guitarist Jason Mozersky worked part-time driving bands back and forth to a performance center in Texas.

VOA: special.2009.05.08

These two oscillate back and forth so the moment of deprivation is often then balanced by a moment of imagination.

来回交替丧失的时刻,经常和想像的时刻,互相平衡。

耶鲁公开课 - 1945年后的美国小说课程节选

Or,he or she can place the hot glass on a metal table called a marver to shape the form by rolling it back and forth.

VOA: special.2009.09.16

These proteins have functions that are essential for life of the cell, they transport molecules back and forth across the membrane.

这些蛋白所起的功能,对于细胞生存至关重要,它们负责转运分子通过细胞膜进出细胞

耶鲁公开课 - 生物医学工程探索课程节选

The jack fish inside these tall tanks swim back and forth quickly.

VOA: special.2009.09.18

And then I could put a couple of plates and I could raster the beam so that when I am looking here,the beam goes back and forth about 80 times a second.

然后我放了两个感光片,我可以检测到光束所以,当我观察时,电子束以每秒80次的速度来来回回了。

麻省理工公开课 - 固态化学导论课程节选

The story moves back and forth in time, from different viewpoints.

VOA: special.2010.12.31

All right. Now the hermeneutic circle, then, involves this reference back and forth between the entities that I've been trying to describe.

好，现在我们知道解释学循环，包括在我刚刚所说的,存在之间的穿梭。

耶鲁公开课 - 文学理论导论课程节选

One of the hands keeps a flat hand shape and it just kind of lightly moves back and forth as if it were a flickering image on a screen."

VOA: special.2011.04.13

So there is a lot of synergy going back and forth between this class and our master program.

这门课和我们的硕士课程,有很多合作。

哈佛公开课 - 幸福课课程节选

So there was bigger meal. There was a girlfriend involved, sometimes invited over to our house as well for the meal, and part of the family, and cards back and forth.

VOA: special.2010.02.08

You knew it was time to start clapping as soon as that chord hit that, it stopped going back and forth,tonic,dominant,just sitting there.

你知道在这个和弦出来的时候要拍手，然后停下来，来回的行进，而主音，属音，然后保持住。

耶鲁公开课 - 聆听音乐课程节选

"If you see a number of scores on a hundred point scale on the 40,50,60 range that suggests that people are moving back and forth.

VOA: standard.2010.02.25

I was half Belgian, I grew up going back and forth between Europe and the United States.

我一半是比利时人，从小到大，我往返于,欧洲和美国之间。

普林斯顿公开课 - 国际座谈会课程节选

Right at the entry to the market, dozens of tourists crowd around its most famous attraction: a fish stand where the workers throw a salmon back and forth several meters over shoppers' heads.

VOA: standard.2010.07.14

Good question, so there is this little reading head kind of like in an old phonograph player that does move back and forth and in and out depending on the implementation.

好问题，这就像,老留声机里的小读头,它通过来回移动,来完成不同的操作。

哈佛公开课 - 计算机科学课程节选

and Mexican officials. Every day, thousands of people on foot and in vehicles go back and forth across the border here, and millions of dollars worth of products cross the line in trucks and railroad cars.

VOA: standard.2009.04.30

It's reversible, that means that p external, equals p. I'm doing it very slowly so that I'm always in equilibrium between the external pressure and the internal pressure so I can go back and forth.

我都可以不损失能量，而把过程逆向进行,整个过程中的,每一步都保持平衡,现在我们来分别。

麻省理工公开课 - 热力学与动力学课程节选

"Children need the interactive back-and-forth.

VOA: standard.2010.05.05

I'll take every view that Socrates puts forward as a view of Plato's, though I'll typically sort of run back and forth sort of in a careless fashion.

我会把苏格拉底提出的,所有观点都当做是柏拉图的,尽管我会随意地,将两者交替着说

耶鲁公开课 - 死亡课程节选

So the bar just goes back and forth.

这个木杆可以来回移动

耶鲁公开课 - 心理学导论课程节选

John Now, you're going to hear John and I go back and forth a lot, well I'm certainly old time, but I'm also an old time Lisp programmer.

现在，你会听到我和,来回的讲好多次，好吧我当然是个老学究，但是我也是一个老lisp程序员。

麻省理工公开课 - 计算机科学及编程导论课程节选

Yeah, over the past 2 years I've been back and forth in Brazil.

是，过去两年我来来回回去了巴西好多次。

我来自阿拉斯加 - SpeakingMax英语口语达人

Teacher hit me. I hit back, and got kicked out of school,and created a riot and so forth.

老师打我，我还手了，因此我被赶出了学校。

普林斯顿公开课 - 人性课程节选

A mule is not spending 1/2 of its time as a donkey, and 1/2 of its time as a horse, we don't see it flickering back and forth between the two, that's not what we see.

骡子并不是一半的时间是驴，另一半的时间是马，我们不会看到它在两者之间来回变化，这不是我们所看到的情况。

麻省理工公开课 - 化学原理课程节选