然后他抽了抽鼻子，发觉有一股烧焦的味道。Then he sniffed. There was a smell of burning.到了我这个年纪自己就会发觉很难再找到一份工作了。At my age I would find it hard to get another job.我突然发觉自己几乎同情起可怜的劳伦斯先生来了。I caught myself feeling almost sorry for poor Mr Laurence...
As the waste materials decompose, they produce methane gas.废物腐烂时会产生沼气。Most animals decompose very quickly after death.大多数动物死后很快腐烂.You can apply heat to decompose organic compounds.你可以加热来分解有机化合物....