"There was a lower concentration of dopamine markers in the brain of individuals with A.D.H.D., specifically in the areas of the brain that are involved with reward and motivation."

VOA: special.2009.09.29

And if you work out the energetics as we've gone with thermochemistry, dH you discover there's a huge negative delta H.

如果你计算能量变化,就像在化学热力学中所作的一样，你会发现很大的负的。

麻省理工公开课 - 热力学与动力学课程节选

There's H&M which I can go into in and actually shop that. But

我可以去 H&M，也可以在那儿购物。但是，

小心超额消费 - SpeakingMax英语口语达人

Still,the W.H.O.says there are two major barriers.

VOA: special.2010.04.13

So our skeleton tells us that carbon is in the middle, so we'll put the h on one side, and the n on the other side there.

我们的骨架告诉我们碳原子应该放在中间，因此我们把氢原子放在一边，把氮原子放在另外一边。

麻省理工公开课 - 化学原理课程节选

There's W.H. Auden, an English-born poet who moved to America.

有奥登，出生于英国却搬到美国去的诗人。

耶鲁公开课 - 现代诗歌课程节选

And there you have it. There is the H right there.

，就得到了这个等式。

麻省理工公开课 - 热力学与动力学课程节选

stdio c So somewhere there's standard IO dot C, stdio h somewhere they're standard IO dot H, but, for me, right now, the only file I need to know about is the dot H, -- because what Sharp include really does -- it's what's called a preprocessor directive.

所以某个地方有一个，现在对于我来说它们是，我只要知道那个，h文件，因为Sharp包含的-,叫做预处理指令。

哈佛公开课 - 计算机科学课程节选

So it looks a lot less messy if we just draw our Lewis structure like this for h c n, where we have h bonded to c triple bonded to n, and then a lone pair on the nitrogen there.

这看起来整洁了不少,如果我们把氰化氢的路易斯结构画成这样的话，这样我们就有氢与碳之间的单键和碳与氮之间三键，然后还有一对孤对电子在氮这里。

麻省理工公开课 - 化学原理课程节选

So it has a bond, there's no bond in h e 2.

所以在He2里没有键。

麻省理工公开课 - 化学原理课程节选

Pressure has dropped out of the picture completely here. So there is no p dependence here.

理想气体的H只是温度的函数,这对于真实气体来说是。

麻省理工公开课 - 热力学与动力学课程节选