1)foul air,vitated air,污浊空气2)extraction of vitiated air,汲排污浊空气3)recirculation of vitiated air,污浊空气回流4)dirty;muddy;foul;filthy,污浊5)polluted trace factor,污浊因子6)dreggy phenomenon,污浊现象
用法和例句
There appeared severe“dreggy phenomenon”with chinese modern novels, which partly resulted from the commercialized literature and the failure of the social progress, but mostly resulted from the Lack of the advanced Culture.