The bronchioles , meanwhile , come courtesy of the lush vegetation , turning the island into a real set of ' green lungs ' .

同时，毛细支气管由茂密的植被构成，岛屿变成了真正的“绿肺”。

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 .

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。