Obsidian is a kind of black glass formed when the heat of a volcano melts the silica material in sand.

VOA: special.2009.09.16

A motive is just a little cell, a germ, out of which the composer will build other musical material.

动机只是个微小的细胞,一个胚芽,基于它 作曲家会创造新的音乐素材

耶鲁公开课 - 聆听音乐课程节选

What I really want to do is just give an example of what happens when you throw the thing, the material into a calorimeter and see how much the temperature changes.

我想做的是给出当,你把这些东西，这些材料扔进，量热计时会发生什么,看看温度会变化多少。

麻省理工公开课 - 热力学与动力学课程节选

Knitting is a way of creating clothing by looping together long thin pieces of material such as cotton or wool.

VOA: special.2009.04.08

This is a course that introduces you to the New Testament literature, but also the history of other material from the very first one hundred years or so of early Christianity.

本课不仅介绍,新约文学，还会介绍其他文献的历史,可以追溯到基督教早期100年左右的时期。

耶鲁公开课 - 新约课程节选

The difference is that the printer builds a three-dimensional scaffolding out of a sugar-based material called a hydrogel.

VOA: special.2010.10.19

Point I want to make about this, though, is that we are going to cover a lot of material that is not in the assigned readings, and we do have assigned readings associated with each one of these lectures.

要说的一点是,我们会有很多,不在拓展阅读里面的材料，而且还有涉及到,每节课内容的拓展阅读。

麻省理工公开课 - 计算机科学及编程导论课程节选

If there is only a small amount of rot, the dead material can be cut away.

VOA: special.2010.06.08

There is a kind of drum beat of thematic material as these scenes pile up.

剧情在不断变换,的场景下不断上演。

耶鲁公开课 - 1945年后的美国小说课程节选

A comet is a huge ball of frozen gas and dust that often releases a long trail of material as it nears the sun.

VOA: special.2009.09.30

This is a poem about bending and breaking, forms, the material givens of the world.

这是个关于曲折和中断的诗，形式，这个世界给我们的原料。

耶鲁公开课 - 现代诗歌课程节选

"One of the benefits is it's a relatively inexpensive renewable material that's readily available."

VOA: special.2009.10.05

That general class of molecules is called receptors and its shown here just as a block of material living in the cell membrane.

这一类分子叫做受体,在这里看起来就像是,生活在细胞膜内的物质

耶鲁公开课 - 生物医学工程探索课程节选

A telomere is a structure of genetic material.

VOA: special.2009.12.08

A person is just a body. Of course, it's a very fancy material object.

人当然是肉体,一个非常不错的物质实体

耶鲁公开课 - 死亡课程节选

So,yes,there is a threat particularly of the use of radioactive material, although we have no specific evidence indicating any capability at this time."

VOA: standard.2009.05.01

Whenever there is a force, it can be traced back to a tangible material cause, which is all the time a force of contact, with the exception of gravity.

如果有作用力,那它一定能找到一个明确的实体施力物体,也就是无论何时物体受的都是接触力,引力除外

耶鲁公开课 - 基础物理课程节选

But the acquisition of radioactive material for a so-called 'dirty bomb,' which is radioactive material that is dispersed with a conventional explosive device, that is not that challenging.

VOA: standard.2009.05.01

This material is a theologically oriented account of Israel's history from the conquest of Canaan, or what is represented as the conquest of Canaan, to the destruction of the state by the Babylonians in 587-586 BCE.

这些内容是以神学为基础对以色列历史的记叙,从征服迦南，或者说是显示出的对迦南的征服，到公元前587到586年被巴比伦人攻陷城邦。

耶鲁公开课 - 旧约导论课程节选

One early submission is a dice game made of scrap material by an inmate who also included detailed, handwritten instructions on how to play the game he invented in his cell.

VOA: standard.2009.10.21

Syuzhet is the plot, the way in which a story is constructed, and the fabula is the subject matter or material out of which the syuzhet is made.

syuzhet“是情节，也就是故事的来龙去脉，而“fabula“则是主题方面，也就是,故事和内容是怎样呈现的。

耶鲁公开课 - 文学理论导论课程节选

"The doctor appears one way, in scene four it's another way, in scene 10 it's something else and it is something that intrigued me a great deal so I sort of gave myself to the material along with the actors.

VOA: standard.2010.02.27

A person is just a certain kind of material object.

人只不过是一种物质实体

耶鲁公开课 - 死亡课程节选

The virus then can self-assemble, that is, you've made a lot of genetic material, you've made a lot of the structural pieces, there has to be some way that the virus can reassemble, repackage itself into active forms.

于是,病毒可以进行自组装了,也就是说,已经制造出大量的遗传物质,也制造出了大量蛋白质外壳,那么病毒就能通过某些方式,重新装配或者重新组合成活性状态

耶鲁公开课 - 生物医学工程探索课程节选

HIV is a member of the family of viruses called retroviruses, and retroviruses all use RNA as their genetic material.

IV是一种逆转录病毒,所有逆转录病毒均以RNA作为遗传物质

耶鲁公开课 - 生物医学工程探索课程节选