air sacs

同根派生

And the lining of the air sacs is too thick to allow gas exchange.
而且,肺泡内壁太厚,无法进行气体交换。
Birds have up to nine extra air sacs to supplement their lungs.
鸟除了肺还有9个多的气囊作为肺的补给。
The cells are part of the tiny air sacs lining the lower airways known as aleoli.
这些细胞是小肺部泡囊的一部分，小肺部泡囊又称肺泡排列在下呼吸道内。
COPD occurs when the airways and air sacs in the lungs become inflamed or damaged, most often due to smoking, and is more common after age 45.
COPD通常发生于肺部的气道或肺泡发生炎症或损伤，大多由吸烟导致，而且通常发生在45岁之后。
By blocking that enzyme system in the lungs, the virus allows liquid to leak into the air sacs, making them boggy and inefficient.
通过抑制肺中该酶系，病毒使体液渗漏进气囊，使之机能衰竭而无效。