说得更恰当一点，粘液是壁状支气管粘液腺渗出的分泌物，呈胶粘体存在。

Rather, mucus tends to occur as ropy strands of secretion exuded from the mural bronchial mucus glands.

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在肺部，布满粘液的支气管像树一样又分为成千上万个更小的管(细支气管)，他们连接到叫做肺泡的小囊。

Within the lungs, the mucus-lined bronchi split like the branches of a tree into tens of thousands of ever smaller tubes (bronchioles), which connect to tiny sacs called alveoli.

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Jerry有可能是先天性支气管异常导致粘液的蓄积导致最终感染，但很难验证这种情况。

It is possible that Jerry had a congenital anomaly in his bronchial tree that led to the pooling of mucus, and eventually to infection, but it is impossible to know for certain.

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