Your body simply can`t maintain the same level of energy without that extra oxygen you get when breathing through your mouth.

否则，不呼吸新鲜的氧气，你体能将会下降。

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T he concentrations of ions in electrolyte were measured by normal analysis method, and the content of oxygen in electrolysis gas was measured by gas chromatography.

利用常规的滴定分析方法测定了电解液中各种离子的浓度，并利用气相色谱测定了电解气中的氧气纯度(体积分数)。

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The metallurgical effects of 80 t top blowing and combined blowing oxygen converters at Baotou Iron and Steel Co have been investigated.

对比了包头钢铁（集团）公司炼钢厂80 t顶底复合吹炼转炉和顶吹氧气转炉的冶金效果。

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"If they don't get injections or oxygen from the Ministry of Finance, then this patient would die."

VOA: standard.2010.04.23

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

It's easy to write the skeletal structure, because it's all oxygen, we don't have to worry about what's going to go in the middle.

画它的骨架结构很容易，因为它们都是氧原子，我们不需要担心哪个原子在中间的问题。

麻省理工公开课 - 化学原理课程节选

If a mother is having difficulty breathing, her baby isn't receiving enough oxygen.

CNN: Flu vaccine poses no risk to unborn

In it he argued that developing countries were poor not because the poor weren't entrepreneurial but because they couldn't get economic oxygen.

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The heart doesn't pump well, the body doesn't get enough oxygen, and it begins to retain fluid, which in turn makes pumping harder.

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