The researchers combined the two compounds, and placed the mixture on breast cancer cells in a laboratory.

VOA: special.2010.06.01

It's one of the only compounds, there's only I think three, where the density actually goes down when it freezes.

它是我见过的，唯一一个，在降温时密度下降的化合物。

麻省理工公开课 - 固态化学导论课程节选

So, in other words, what happens if we put a bunch of elements, compounds into a reactor but they are not in the balanced amounts?

换句话说，如果我们将一堆的元素，放到一个反应器里面的话,而他们不是平衡时的比例会发生什么呢？

麻省理工公开课 - 固态化学导论课程节选

Fuller found it in nature. It appeared in the shapes of organic compounds and metals.

VOA: special.2010.05.30

And for any of the other compounds. So in other words, by defining that reference state, we can then figure out or measure heats of formation of a vast number of compounds.

对吧？对于任何其他的,化合物也是一样，所以换句话讲，定义了这个参考状态,我们就能算出或测量许多。

麻省理工公开课 - 热力学与动力学课程节选

Flavor aside, scientists have recognized it as a complex blend of chemical compounds with potential health effects, both good and bad.

VOA: standard.2010.06.30

But in terms of drugs that don't look like maybe this compound was used in the synthesis, many of them might have used thionyl chloride, because it generates such a nice reactive intermediate that you can go on and make a bunch of different compounds from that intermediate.

但是对于药物来说,它们可能跟合成过程中用到的这种化合物并不相像，很多药物的制造过程中都会用到亚硫酰氯，因为它能产生活性如此之高的反应中间体,以至于你可以继续利用反应中间体,来制造一堆不同类型的化合物。

麻省理工公开课 - 化学原理课程节选

So we are thinking perhaps those compounds are playing some sort of protective role against several cancers."

VOA: standard.2010.06.30

In fact, that's their preferred state is suspended in a fluid where nutrients are widely available to them, and where they can swim from one spot to another in order to get the nutrients they need, or in order to run away from toxic compounds.

事实上,细菌更喜欢生活在,营养丰富易得的悬浮液中,它们可以从一个点游动到另一点,以获取所需营养,或逃离有毒物质

耶鲁公开课 - 生物医学工程探索课程节选

Researchers in Melbourne hope to isolate the most effective compounds for use in a potential vaccine.

VOA: standard.2010.01.20

Many personal and place names in the patriarchal narratives are Israel Ishmel Beth-el compounds in which one element is El. Israel, Ishmael, Beth-el.

在宗法的叙述中，很多人名与地名,组成中都有El这一元素。

耶鲁公开课 - 旧约导论课程节选

But in an era of plastic explosives and advanced chemical compounds, that system has proved lacking.

VOA: standard.2009.12.30

If you want to understand whether compounds form or not look only at the valence shell.

如果你想理解化合物是否形成,而不仅仅只是看看价层。

麻省理工公开课 - 固态化学导论课程节选

If those compounds can be isolated, maybe someday you'll be able to take an anti-cancer pill, but for us coffee lovers, the answer may just be another refill.

VOA: standard.2010.06.30

Atoms of different elements combine in simple whole number ratios to form compounds.

不同元素的原子,以简单的整数比化合成化合物。

麻省理工公开课 - 固态化学导论课程节选

"Right now we're mostly sampling for hydrocarbons and other bacteria, but what we would like is expand into some other chemical compounds that may be contained within the dispersants."

VOA: standard.2010.06.01

You could even make compounds: Earth plus water makes cold.

你们甚至可以混合起来：,土加水等于寒冷。

麻省理工公开课 - 固态化学导论课程节选

Some were buried in family compounds, but many families bring bodies to be buried here because in Kigali's rapid development many homes are being removed to make room for new construction.

VOA: standard.2009.04.10

We measure them for all these compounds.

做这样的测定，然后我们回到。

麻省理工公开课 - 热力学与动力学课程节选

We can tabulate them. We can know them, and then when we have reactions that inter-convert different compounds, we can calculate the heat of reaction is just the difference between the heat of formation of the reactants, and the heat of formation of the products, right.

种化合物的生成热，可以把它们列成表,可以认知它们，而当我们要处理，在不同化合物间转变的反应时,我们只要计算反应物和,生成物的生成热之间的不同,就能计算出反应热。

麻省理工公开课 - 热力学与动力学课程节选

And as an example, let's take sulfuryl chloride, SO2, Cl2 make it a little complicated, Cl2, right, so don't worry about these compounds.

让我们用SO2作为一个例子，这有点难度，对，还有，不要担心这些化合物。

麻省理工公开课 - 固态化学导论课程节选