常见例句They can block air passages or sinus channels to cause a variety of grief.它們能阻塞氣道或鼻竇的通道，造成各種痛苦。It is commonly caused by chronic alveolar hypoventilation or air way mucus plugging.究其原因，可能爲肺泡慢性通氣不足或氣道分泌物阻塞。 返回 air passages