虽然吸烟者可以在慢性阻塞性肺疾病形成前戒烟来进行预防，但一旦肺部受损，那病情就无法逆转了。
While smokers can prevent COPD by quitting before it develops, once the lungs are damaged it isn't reversible.
虽然吸烟者可以在慢性阻塞性肺疾病形成前戒烟来进行预防，但一旦肺部受损，那病情就无法逆转了。
While smokers can prevent COPD by quitting before it develops, once the lungs are damaged it isn't reversible.
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