2011年雅思词汇辅导高频词汇：bacteria

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。