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
- Our teacher has mutation of sounds suddenly. 我们的老师突然语音发生了变化。
- 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。
- bacteria mutation 细菌变异
- 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。
- 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。
- 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。
- Formation or development of a mutation. 变异的形成或者发展
- To undergo or cause to undergo mutation. 经历变化或使经历变化
- 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
- Mutation are produced by a number of chemicals. 许多化学试剂能产生突变。
- The inhibition of growth, but not the killing, of bacteria. 细菌抑制抑制细菌的生长，但不将其杀死
- An organism, such as a bacterium, requiring oxygen to live. 好氧菌需要氧气生存的有机体，例如细菌
- What matter is not innovation, but useful mutation? 二.;任何领域都可以创新三
