A simple water pump is helping to improve the lives of poor families in several Asian and African countries.

VOA: special.2009.08.17

You do it so quickly that the heat flow between the inside of the bicycle pump and the outside is too slow compared to the speed at which you compress.

我们用力很大,于是压缩得很快,打气筒内外热传递的速度,与之相比要慢得多。

麻省理工公开课 - 热力学与动力学课程节选

That example I gave last time with the bicycle pump was not quite the right example.

上次我举打气筒的例子,是不太恰当的。

麻省理工公开课 - 热力学与动力学课程节选

There have been several proposals to pump water into the Dead Sea from the Red Sea or the Mediterranean.

VOA: special.2009.05.18

I have only drawn three, but now let's pump up the volume.

我只是这么画，现在让我们增大体积。

麻省理工公开课 - 固态化学导论课程节选

The treadle pump is easy to build from bamboo or other wood and two metal cylinders with pistons.

VOA: special.2009.08.17

So then to encourage you to "Pump up your room" they had music playing and this is the kind of music that they had on that flatbed truck.

然后还鼓动你去"律动你的房间",他们还放着音乐,这就是他们在那辆卡车上播放的音乐类型

耶鲁公开课 - 聆听音乐课程节选

The treadle pump is based on a design developed in the nineteen seventies by Norwegian engineer Gunnar Barnes.

VOA: special.2009.08.17

So nowadays they just pump you full of some drug to get you really happy and so you're really stoned out of your head, you're and say this isn't so bad.

所以现在他们让你服用大把的药物,让你飘飘欲仙,而你也因为吸食了毒品而变得神志不清，所以你会说，这方法还挺管用的。

耶鲁公开课 - 心理学导论课程节选

He's not breathing and we're trying to pump him but he's not -- " "OK,OK.How old is he?"

VOA: special.2009.06.27

But one that I was very interested in was biology, and the reason was we did a lot of cool labs in high school, I loved doing the dissections -- it was very interesting to me to think about how different organs worked, how the heart could be a pump, how the lungs worked.

但当时我很喜欢生物学，因为我高中做了很多很酷的生物实验,我很喜欢解剖-,我觉得了解不同器官,怎么工作很有趣,像心脏怎么泵血。

麻省理工公开课 - 化学原理课程节选

As a final step there are plans to pump in mud and cement from below through relief wells.

VOA: special.2010.08.07

What if you could take just a pump that's capable of continuously administering insulin at various rates and connect it to a sensor that's able to continuously measure the sugar level in your blood?

如果我们安装一个泵,能够持续的动态控制胰岛素输出,并把这个泵连接到一个,持续监测体内血糖水平的变化的传感器上

耶鲁公开课 - 生物医学工程探索课程节选

They cannot harm themselves because the amount of painkiller in the pump is carefully measured and limited.

VOA: special.2010.05.04

So you start with the bicycle pump at one bar, let's say, right?

一个大气压，开始？

麻省理工公开课 - 热力学与动力学课程节选

How many hours a day the pump needs to be operated depends on the season and how much water is needed for crops.

VOA: special.2009.08.17

So if you've got to pump that tire really a lot, then you're going to you're going to really feel a lot of heat there. The compression of the basically it's an adiabatic compression.

所以若果你给轮胎，打了很多的气，你会觉得你感觉,阀门那儿非常的烫，这种压缩,基本上是一个绝热的压缩。

麻省理工公开课 - 热力学与动力学课程节选

Between thirty and thirty-five women used each system to pump water from the ground or a stream.

VOA: special.2010.01.11

And that really is the bicycle pump.

这正是自行车打气筒的情况。

麻省理工公开课 - 热力学与动力学课程节选

One combines the use of hands to pump the victim's chest with rescue breathing.

VOA: special.2009.08.11

You're taking the air inside of the pump and you're compressing it. You're doing it so fast that there's not enough time for heat to come out of the gas that's inside the pump towards the walls of the pump.

你把空气吸进气筒里并且压缩它,你的动作很快以至于,没有足够的时间让热量,从气筒里面跑出来,传递到气筒壁上。

麻省理工公开课 - 热力学与动力学课程节选

Uttar Pradesh has three treadle pump manufacturers and more than seventy-three thousand pumps.

VOA: special.2009.08.17

But this time this really is the bicycle pump.

但在这里是很符合实际的。

麻省理工公开课 - 热力学与动力学课程节选

One is a pump that lets patients give themselves pain medications as needed.

VOA: special.2010.05.04

But you don't compress it so quickly that you're not in there reversible process so you compress that if you were to feel the temperature of the air and you can feel it through the nozzle gives you an idea of the temperature of the air inside your bicycle pump.

但是压缩速度,也不能太快,否则就不是,可逆过程了,这样当压缩气体时,从喷嘴可以感受到,内部气体的温度。

麻省理工公开课 - 热力学与动力学课程节选

Her father was a pump operator for the city water department.

VOA: special.2009.01.12

It said "Pump Up Your Room."

上面写着"律动你的房间"

耶鲁公开课 - 聆听音乐课程节选

Everyone in the family can take turns operating the pump.

VOA: special.2009.08.17

The Henry Milker is a hand-operated vacuum pump.

VOA: special.2010.07.20

People with heart failure tend to gain weight because fluids build up when the heart can't pump enough blood.

VOA: standard.2010.06.04