Hospital admissions for asthma attacks have doubled.

哮喘发作入院人次已成倍增加。

《牛津词典》

Cold air can trigger chest pain or asthma attacks in some people.

冷空气可能会引发胸疼或者哮喘。

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Such pollution can contribute to heart disease, lung cancer and asthma attacks, the association said.

协会人员说，这些污染能造成心脏疾病，肺癌，以及哮喘爆发。

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And they should act quickly to treat asthma attacks and know when to seek medical help.

VOA: special.2009.07.28

High stress levels have been found to cause asthma attacks that make it difficult to breathe.

VOA: special.2009.03.24

"All three can kill people, and all three can cause asthma attacks, " asserts Nolen.

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And Aden, a 7-year-old boy from New York, who has asthma attacks from secondhand smoke.

WSJ: US launches new batch of graphic anti-smoking ads

One ad features a Kentucky high school student who suffers asthma attacks from being around cigarette smoke.

WSJ: US launches new batch of graphic anti-smoking ads