空气在进入气管前被加热了，在气管的底部分成两个导气管通向每一侧的肺，这两人分支被叫做支气管。
The air is warmed up before passing down the windpipe, where it's divided at the bottom between two airways called bronchi that lead to either lung.
如果稠密的黏液可以被稀释成低浓度的，气管、细支气管和肺中的细毛就都能把它向上推送，咳嗽就不会发生。
If the thick mucus could be diluted into a more WATERY consistency, it would be wafted upward by the tiny hairs in the wind pipe, bronchioles, and the lungs. Coughing would not occur.
加拿大肺协会网在其网站上解释说C.O.P.D .是肺气肿和慢性支气管炎的新称谓。
The Canadian Lung Association Web site explains that C.O.P.D. is the new name for emphysema and chronic bronchitis.
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