Fèibìng zài guòqù shì yīzhǒng fēicháng kěpà de jíbìng.
Lung disease was a very frightening illness in the past.
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Historically, 肺病 often referred specifically to tuberculosis (TB), which was widespread and feared before modern medicine. Today it is a general term for any lung disease, including 肺结核 (TB), 肺炎 (pneumonia), and 肺癌 (lung cancer).