英语专业 高级英语
IV. C.1.
Dirt refers to any unclean or soiling
matter, as mud,dust, dung(粪), trash, etc. Filth is applied to that which is disgustingly dirty. Soot is a black substance consisting chiefly of carbon particles formed by the incomplete combustion(燃烧) of burning matter. Grime suggests soot or granular(颗粒的) dirt deposited on or ingrained in a surface.