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

VOA: special.2009.08.17

Basically what he did is he took a very thin metal foil and he bombarded it with charged particles.

简单的说他做的工作是,用一张非常薄的金属箔,然后用带电的粒子轰击它。

麻省理工公开课 - 固态化学导论课程节选

But at the end of the day, if you move this metal thing aside with your fingers, don't squeeze it too hard.

但是在下课后，如果你用手指触碰这个金属块，不要用力过猛。

哈佛公开课 - 计算机科学课程节选

They were conservative men. They represented workers with certain skills, such as wood workers or metal workers.

VOA: special.2011.03.31

As Little Albert was playing with the rat, " "Oh, I like rats, oh," and banged the metal bar right here .

小阿尔伯特正在和老鼠玩耍，“噢，我喜欢老鼠“,重击那里的金属棒。

耶鲁公开课 - 心理学导论课程节选

This metal form is chemically treated before being covered with ink and then pressed onto paper.

VOA: special.2009.09.02

You start with liquid metal one, liquid metal two, you have the atom ratios proper, they mix, electron transfer occurs and poof, it is clear and colorless. Sorcery.

从液态金属一，液态金属二开始，你有合适的原子比例，混合它们，电子转移发生且被证实了，产物是透明无色的，有点辣味。

麻省理工公开课 - 固态化学导论课程节选

A hoop house is basically a metal frame covered with plastic or other all-weather material.

VOA: special.2009.12.22

Yet, they wanted to get clean and so what device they used was to take oil, typically olive oil, spread it on themselves, then get a scrapper, a metal scrapper, and scrap off the oil with it what was underneath the oil.

当他们想要保持清洁时,他们所使用的东西就是油,通常是橄榄油,把橄榄油抹在身上,然后拿一个刮板,金属刮板,把污垢和油一起刮下来

耶鲁公开课 - 古希腊历史简介课程节选

With this method,the printmaker cuts or etches an image onto a piece of metal.

VOA: special.2009.09.02

The first computer mouse was a carved block of wood with two metal wheels.

VOA: special.2010.08.01

Bell experimented with devices that could find bullets and other metal in the body.

VOA: special.2010.05.14

This metal surface, placed in contact with the water, will heat the water.

VOA: special.2009.04.20

The shelves are pieces of metal with many small holes through them.

VOA: special.2009.11.30

Faulkner says he is a person with the depth of pressed metal.

VOA: special.2010.01.10

Purdue University provided Amelia with a new all-metal, two-engine plane.

VOA: special.2010.05.26

People use a metal call box with a push-to-talk button to connect to a live operator, as Rose Shuman explains: "You just push a button, a big green button, and that will connect you directly to our operators who are sitting in front of computers, and speak your language.

VOA: special.2009.10.12

With his money and scientific genius, he creates an almost indestructible, flying,metal suit of armor.

VOA: standard.2010.05.19