He said that the percent ionic character, and this is within a bond, not for a compound, for a covalent bond.

他提到离子百分数，是指一根键中，并非一个分子中。

麻省理工公开课 - 固态化学导论课程节选

But this is a compound, right, it has some non-zero heat of formation from the elements. So is water, right?

但这是种化合物，对吧？,它具有非零的生成热,水也是一样，对吧？

麻省理工公开课 - 热力学与动力学课程节选

Just so that we are clear, this is the bond in this compound.

所以我们明白，这是化合物中的共价键。

麻省理工公开课 - 固态化学导论课程节选

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 quickly talked about certain aspects of why we like other people including proximity, similarity, and attractiveness, and where we left off was a discussion of the Matthew effect, which is basically that good things tend to compound.

我们昨天略为讲几个方面,解释我们为什么会喜欢他人,包括邻近性，相似性和吸引力，我们昨天最后讲的是马太效应，它是说，好事是会扎堆的。

耶鲁公开课 - 心理学导论课程节选

Well, I need to write the reaction that forms that compound from it's elements, right?

我需要写出从元素单质生成,这种化合物的反应，对吧？

麻省理工公开课 - 热力学与动力学课程节选

Delta H of formation means the enthalpy of this compound minus the enthalpy of its constituent elements in their most stable state at room temperature and pressure.

生成焓就是这种组分,的焓减去它的所有组成元素,在室温和常压下处于,其最稳定的状态时的焓。

麻省理工公开课 - 热力学与动力学课程节选

And when a compound is decomposed, the atoms are recovered unchanged.

当一个化合物被分解的时候，原子有恢复原来未曾改变的面貌。

麻省理工公开课 - 固态化学导论课程节选