您要查找的是不是：
- A film of mucus and bacteria on a tooth surface. 齿菌斑牙齿表面一层粘液和细菌的膜
- Bacteria are too small to see with the naked eye. 细菌太小，肉眼看不见。
- Many diseases are caused by bacteria. 许多疾病是由细菌引起的。
- Dissolution or destruction of bacteria. 溶菌作用对细菌的溶解或破坏
- Such a growth or colony, as of bacteria. 培养菌该种生长物或群落，如培养菌
- The presence of bacteria in the blood. 菌血症血液中细菌的存在
- He worked out methods to destroy bacteria on the seeds. 他研究出消灭种子上细菌的方法。
- A thick-walled resting spore, as in certain algae or fungi. 包囊一种厚壁休眠孢子，如在某些海藻或者真菌中
- A bacterium is identified as the cause for his duodenal ulcer. 一种细菌被断定为造成他十二指肠溃疡的根源。
- Water is the core of a healthy ecosystem. 水是维持生态系统良性循环的根本。
- Professor Fang worked out a method to destroy bacteria on the seeds. 方教授想出了一个办法来消灭种子上的细菌。
- A substance used to kill or inhibit the growth of algae. 杀藻剂用来杀死或制止水藻生长的物质
- An old shellfish or turtle with a growth of algae on its back. 绿毛龟一种背上有绿色水藻的老的水生贝壳类动物或海龟
- An organism, often a bacterium or fungus, that feeds on and breaks down dead plant or animal matter, thus making organic nutrients available to the ecosystem. 腐生菌; 腐生物一种有机物，通常是细菌以死的动植物为食并把它们分解，藉此为生态系统提供有机养分
- Observe carefully how the bacteria respond to this stimulus. 仔细观察细菌对这一刺激有什么反应。
- Does potting plants means treasuring ecosystem? 家养花草就是爱护生态吗?
- Algae grow and spread quickly in the lake. 湖中水藻滋蔓。
- Hot weather multiplied the bacteria in the food rapidly. 炎热的天气使食品中的细菌迅速繁殖。
- A similar mass of fibers formed by certain bacteria. 由某种细菌形成的类似的一束纤维
- To respect Mother Nature and protect the ecosystem. 要尊重自然、保护生态。
