However, The CTC as a byproduct in the production of chloromethane is about 3 ~5 %.然而在甲烷氯化物的生产过程中, 不可避免地要有3-5%左右的副产物四氯化碳生成.There's also dioxin, a byproduct of paper manufacture and waste incineration.还有二恶英, 纸生产和废物燃烧...
Where Root had been suave, knox was often offensive.鲁特表现得温和文雅, 诺克斯则往往唐突冒失.He is a suave, cool and cultured man.他是个世故、冷静、有教养的人。Fahmy was at once transparent and subtle , convivial and abrasive, suave and prickly.法赫米这个人既开朗...