Over time, trapped air slowly diffuses into the bloodstream, and tiny airways collapse - a process called atelectasis.

随着时间推移，这气会慢慢扩散到血液中，细小气管萎缩内陷，这就是张形成过程。

Inflamed airways along with atelectasis and air trapping due to mucus plugs can lead to difficulty breathing and hypoxia.

气管产生炎症，以及黏液栓导致张以及气体潴留，会导致呼吸困难和缺氧症。

Both atelectasis and air-trapping can sometimes be seen in the different regions of the lungs at the same time like in this chest X-ray.

有时在部同区域，可同时出现张和气体潴留，就像图中这个胸部X片样。