Breathing secondhand smoke for a short time can irritate your lungs and reduce the amount of oxygen in your blood.

短时间里吸收二手烟会刺激你的肺部，并减少血液中的氧气量。

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Treatment for this anemia may include the administration of oxygen, pain-relieving drugs, and oral and intravenous fluids to reduce pain and prevent complications.

主要是对症治疗，包括吸氧、止疼药、口服液或输液以控制疼痛和并发症等（此句觉得翻的别扭，求指正~）。

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This buildup can cause your arteries to narrow and reduce the flow of nutrient-and oxygen-rich blood to your heart, as well as other parts of your body.

这会缩小和减少营养和丰富氧流入你的血液,。

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CPR,or cardiopulmonary resuscitation, can save a life and reduce the risk of brain damage from loss of oxygen.

VOA: special.2009.06.09

Managers said the special rooms will have small amounts of nitrogen piped into them to reduce the oxygen content in the air, so fires cannot start.

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Science fiction writers tell us about astronauts put into suspended animation on long trips to the stars, their metabolism slowed to a crawl to reduce food and oxygen requirements.

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Corus said the investment would reduce C02 emissions by reusing gas generated inside the Basic Oxygen Steel (BOS) plant.

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