abandon [同]desert, forsake[反]reclaim

　　v. to leave a thing or place, esp. because it is impossible or dangerous to stay离弃；舍弃

　　Over the past 40 years, most people have abandoned their nomadic ways, but they still rely heavily on nature to provide food and clothing. 在过去的40年里. 大部分人放弃了游牧生活，但他们仍然在很大程度上依赖大自然提供衣食来源。

bacteria

　　n. （plural of bacterium）a type of very small organism that lives in air. earth, water, plants and animals, often one which causes a disease细菌

　　Bacteria grow best in hot, damp conditions, and are often to be found in most domestic bathrooms and kitchens. 细菌适宜在湿热的条件下生长，在大多数的家庭厨房和浴室里都能发现它们。