The hydrogen reacts with oxygen to produce electricity and water.

VOA: special.2009.09.07

We could also figure out the formal charges, and obviously the formal charges between these two atoms, they're going to be identical, we're only dealing with oxygen atoms here.

我们还可以把形式电荷算出来，显然这两个原子的形式电荷，应该是完全相同的，我们要处理的只有氧这一种原子。

麻省理工公开课 - 化学原理课程节选

But there is nothing saying you cannot take magnesium and mix it with oxygen and make magnesium oxide.

同样的道理，如果将镁,与氧一起反应，就会得到氧化镁。

麻省理工公开课 - 固态化学导论课程节选

The cells created electricity by mixing hydrogen with oxygen.

VOA: special.2009.06.24

You burn methane, and it combines with oxygen to form water, to form CO2.

燃烧酒精，酒精分子和氧气结合形成水和二氧化碳。

麻省理工公开课 - 热力学与动力学课程节选

Far below sea level, they contain some of the harshest environments on Earth, with no oxygen and no light.

VOA: special.2010.11.10

So let's think about water here as our simplest example with oxygen.

让我们讨论,对于氧来说最简单的例子-水。

麻省理工公开课 - 化学原理课程节选

Doctors say that over time the damage interferes with the natural exchange of oxygen and carbon dioxide in the lungs.

VOA: special.2010.06.23

There is magnesium with oxygen.

这是氧化镁。

麻省理工公开课 - 固态化学导论课程节选

But a drop in oxygen levels can cause a health emergency in people with heart or lung problems.

VOA: special.2009.07.14

That is metallic sodium that would keep in kerosene so it doesn't react with the oxygen in the air.

金属钠应该保存在没有中,这样它就不会和空气中的氧气反应了。

麻省理工公开课 - 固态化学导论课程节选

The astronauts were three hundred twenty thousand kilometers from Earth with little oxygen, electricity and water.

VOA: special.2009.07.22

You start with O double minus, so that is oxygen plus two electrons.

你从氧二负离子，也就是氯元素带2个负电子。

麻省理工公开课 - 固态化学导论课程节选

The balloons contain helium and oxygen so that they float around with the air currents.

VOA: special.2010.09.05

If we go to the oxygen atom, now we're talking about starting with 6 in terms of valence electrons again, but instead of 2, you can see we have 6 lone pair electrons around the oxygen minus 1/2 of 2, so we have minus 1 is our formal charge.

如果我们分析氧原子的话，现在我们讨论的还是,从六个价电子开始，但孤对电子不再是两个了，你会看到氧周围,有六个孤对电子，再减去二的一半，因此我们有一个负的形式电荷。

麻省理工公开课 - 化学原理课程节选

"Until he saw me walking around with a can of liquid oxygen.

VOA: special.2010.06.23

These problems were more common among males, those with injured nerve tissue in the brain and those who had been given oxygen supplies for days as a baby.

VOA: special.2010.11.30

Researchers also found that oxygen could stop the headache pain and eliminate other symptoms associated with cluster headaches, such as red,swollen and watery eyes.

VOA: standard.2009.12.17

"He saw me walking around with a can of liquid oxygen.

VOA: standard.2010.06.21