During all phases of sleep, several changes in the air passages have been observed.

在睡眠的各个阶段，呼吸道中产生了一些变化。

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Her air passages were swelling dramatically.

她的气管极度肿胀。

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They can block air passages or sinus channels to cause a variety of grief.

它们能阻塞气道或鼻窦的通道，造成各种痛苦。

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The plastic can block air passages. The trash can also make the animal feel full, lessening its desire to eat or drink.

VOA: special.2009.09.22

The air passages constrict when allergens (flower pollen, for instance) or other irritants are inhaled.

CNN: Making Child's Play Fun

This reduces the sensitivity of the air passages to foreign particles, allowing young sufferers to get more out of life.

CNN: Making Child's Play Fun

However, a cough can outlast all those other symptoms, perhaps because the air passages in your lungs remain sensitive and inflamed.

CNN: Mystery cough? 8 possible culprits