烟灰和臭氧都会造成呼吸系统疾病而且会对肺部造成永久性损伤。
Both soot and ozone cause respiratory problems and can permanently damage the lungs.
慢性肺部病变患者的呼吸性酸中毒情况由为严重，因为在这些患者中，先前存在的呼吸性酸中毒可因其它疾病或损伤而加重。
The problem is particularly serious in patients with chronic pulmonary disease, in whom pre-existing respiratory acidosis may be accentuated by another illness or injury.
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