Bacteria are very small organisms. Some bacteria can cause disease.
例句
Chlorine is added to kill bacteria.加氯是为了杀死细菌。
英汉词典释义
n.
细菌
All bacteria are larger than viruses.所有细菌都比病菌大。
英英词典释义
Noun
1. (microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered plants