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。

youdao

His asthma attacks have become less frequent, from once every three or four months to only about twice a year.

他的哮喘发作次数越来越少，从以前每三、四个月一次，减少到一年仅约两次。

youdao

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.

FORBES: Magazine Article

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