Armstrong began to describe what he saw: "The surface appears to be very, very fine grain,like a powder.

VOA: special.2009.07.15

When Pavlov put food powder in the dog's mouth and saliva was generated, that's an unconditioned stimulus giving rise to an unconditioned response.

巴甫洛夫给狗喂食,狗会分泌唾液，这就是无条件刺激引起了无条件反应。

耶鲁公开课 - 心理学导论课程节选

What he would do is he'd put food powder in the dog's mouth to generate saliva.

他的做法是,给狗喂食，让狗分泌唾液。

耶鲁公开课 - 心理学导论课程节选

It is often mixed with cream of tartar, a fine powder commonly used in cooking.

VOA: special.2010.08.02

The powder you could ship anywhere, and reconstitute it onsite, and then it gets injected.

你可以把粉末运送到任何地方,就地恢复活性,并将其注射到人体内

耶鲁公开课 - 生物医学工程探索课程节选

Their beans are used to make cocoa powder, cocoa butter and of course chocolate.

VOA: special.2010.10.19

But Pavlov observed that when somebody entered the room who typically gave him the food powder, the dog--the food powder saliva would start to come out.

他注意到,当给它喂食的人,进屋时，狗便开始分泌唾液。

耶鲁公开课 - 心理学导论课程节选

a small amount of fertilizer and dolomite, a powder-like substance made from limestone.

VOA: special.2011.06.14

And then they found that they could freeze-dry this preparation of virus, and freeze-drying to lower the temperature, freeze it, then extract out all the water, so you're left with a powder, basically a powdered form of the virus, that could be shipped all over the world, and then reconstituted by adding water to it.

研究者们发现可以冷冻干燥这些病毒制剂,冷冻干燥就是就是降低温度,冷冻病毒,然后提取出所有水份,然后就剩下一些粉末,这主要是粉末状的病毒,这样就能将它运往全世界,并可以通过加水来恢复病毒的活性

耶鲁公开课 - 生物医学工程探索课程节选

A bottle full of sleeping powder was on a table near his bed.

VOA: special.2009.07.25

Then the powder is formed into pellets and shaped into pots.

VOA: special.2010.06.01

The flowerpots are made by reducing chicken feathers to a powder.

VOA: special.2010.06.01

The Americans did not have the smokeless powder.

VOA: special.2010.07.15

They contain flour,eggs, milk and baking powder.

VOA: special.2011.02.20

They say Mutallab suffered severe burns when he tried to use a liquid to ignite powder strapped to his legs and blow up the aircraft.

VOA: standard.2009.12.26

"But if you look at it carefully, you find that granite contains quartz, and quartz when its ground to a fine powder and inhaled, can cause silicosis."

VOA: standard.2010.07.26

But it is not easy to get at. Specks of gold embedded in the mountain rock can only be extracted by blasting and crushing the rock to powder.

VOA: standard.2010.04.22

Community leaders say donating basic goods like milk powder and aspirin, which can be scarce in Cuba, has a major impact for Cuban families struggling to survive under Communist rule.

VOA: standard.2009.10.23

A blogger for the Huffington Post, Sedaei claims that writing served as a sort of white powder for him, which he could then throw over the invisible man and discover his shape.

VOA: standard.2010.06.15