The World Health Organization says Africa is behind other parts of the world in treating H.I.V./AIDS, tuberculosis and malaria.

VOA: special.2009.06.17

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

The other thing is that we can re-write our h c n in terms of bonds.

还有一件事是我们可以用键的形式来表示氰化氢。

麻省理工公开课 - 化学原理课程节选

Before the disaster, it suffered from high death rates among babies and high rates of H.I.V./AIDS,hepatitis and other communicable diseases.

VOA: special.2010.02.01

In a .h file, it's generally the names of functions other people wrote.

在头文件里,只有一些函数名。

哈佛公开课 - 计算机科学课程节选

In other new research, a study has found that circumcision does not decrease the risk that H.I.V.positive men will infect women.

VOA: special.2009.07.29

And thanks to Professor Hess, I can now say that the total energy delta H In other words, delta H formation of sodium chloride should be independent of paths.

感谢道盖斯教授，我们可以认为，这整体过程,氯化钠的化合能,与路径无关。

麻省理工公开课 - 固态化学导论课程节选

There was more demand for twenty thousand other H-1Bs for those with advanced degrees.

VOA: special.2009.07.02

include stdio h The next line of code says include standard io.h which just as a little sanity check contains among other things, printf.

接着的一行代码写着,这个库文件包含一些我们常用的函数,譬如，printf函数。

哈佛公开课 - 计算机科学课程节选