They lift their eyes to the tall rock walls that rise hundreds of meters up from the floor of the valley.

VOA: special.2010.07.05

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

The next time you go to Mycenae don't miss the cistern that was dug in the mountains, on the hillside, within the walls at that period.

你们下次去迈锡尼古城的时候,一定不要错过那一时期在山坡和城墙之间,挖掘的蓄水池

耶鲁公开课 - 古希腊历史简介课程节选

The Victorians used one color for edging, another for the outside walls, another for decorative pieces connected to the house.

VOA: special.2009.06.01

So as some of you probably know, Yale is undergoing an open education project and they're videoing several classes, and the idea of this, is to make educational materials available beyond the walls of Yale.

可能你们已经知道了,耶鲁大学正在开展一个教育项目,我们在录制一些课程的录像,这样做的目的是让,耶鲁外的人也能享受到这些教学资源

耶鲁公开课 - 博弈论课程节选

The ancestral Pueblo people used stone tools to widen the small natural openings in the face of the canyon walls.

VOA: special.2010.07.05

And, at the very beginning there was a train that went around the Wall of Paris, more about the walls of Paris another time, that's fun to talk about, and Parisians would take picnic lunches, and they'd get on the train, and then they'd hear these large explosions and realize that they could get killed by these large explosions.

一开始的时候,有一趟火车,是绕着巴黎城墙行驶的,下次我们多讲讲巴黎的城墙,这挺值得一谈,巴黎人会带着午餐便当,坐上火车,然后他们听见了巨大的爆炸声,突然意识到他们可能会被炸死

耶鲁公开课 - 1871年后的法国课程节选

At indoor centers, climbers have many different paths they can use to get to the top of the walls.

VOA: special.2009.12.09

Young adults would use paint in special cans to spray their "tag" on walls and train cars around the city.

VOA: special.2009.04.08

In fifteen-oh-eight, Pope Julius the Second asked Raphael to cover the walls and ceiling of some of the Pope's private living areas.

VOA: special.2010.02.03

Many walls broke, allowing billions of liters of water from the Gulf of Mexico and two nearby lakes to flood the city.

VOA: special.2010.01.22

When the Union army got to Spotsylvania, the Confederates were waiting behind walls of earth and stone.

VOA: special.2009.11.26

He says the windows will insulate almost as well as the walls they are connected to.

VOA: special.2009.05.22

The walls were built extra thick to save heat and energy-efficient appliances kept energy use low.

VOA: special.2009.10.27

They were suspended from ropes as they used heavy air-powered hammers to break any loose rock away from the face of the canyon walls.

VOA: special.2009.08.12

Visitors pay twenty-five dollars each to walk beyond the canyon walls, surrounded by the canyon, while standing at the edge of the glass bridge.

VOA: special.2009.10.07

Climbers have to pull themselves straight up the face of very high rocks or walls.

VOA: special.2009.12.09

Some of the mummies had signs of atherosclerosis in the inner walls of up to six arteries, the passages that lead blood away from the heart.

VOA: special.2009.12.15

Inside,all of the walls can be moved to best fit the art collection.

VOA: special.2009.12.13

But too often their cry for help has sounded hopelessly against the outer walls, while others -- less deserving -- find easy entrance to the halls of Congress.

VOA: special.2010.06.24

From this room, you can explore the nearby Chinese Loggia, or go upstairs to see the Italian art hung on the deep red walls of the Raphael Room.

VOA: special.2009.01.11

They built or improved existing walls and floodgates to block the waves.

VOA: special.2009.03.17

"Who are you?" the walls seemed to say.

VOA: special.2010.05.29

And we need to form an even stronger partnership to bring down the walls of the 21st century,".

VOA: standard.2009.11.09

Wowereit added that the project is meant to teach them about that time in history and to encourage them to break down walls and barriers wherever they may be.

VOA: standard.2009.11.09

And we need to form an even stronger partnership to bring down the walls of the 21st century and to confront those who hide behind them the suicide bombers, those who murder and maim girls whose only wish is to go to school, leaders who chose their own fortunes over the fortunes of their people,".

VOA: standard.2009.11.09