记忆方法
例如形状象a,b的细菌 这些细菌很有意思,都喜欢倒立(反写单词）
双解例句
小知识
Bacteria are microscopic living organisms, usually one-celled, that can be found everywhere. They can be dangerous, such as when they cause infection, or beneficial, as in the process of fermentation (such as in wine) and that of decomposition.
In 1676, Anton Van Leeuwenhoek first observed bacteria through a microscope and called them “animalcules.” In 1838, the German Naturalist Christian Gottfried Ehrenberg called them bacteria, from the Greek bakt?ria, meaning “little stick.” An apt word, as the first observed bacteria were shaped like rods, although bacteria can also be spiral or spherical in shape. A grammar note: The word bacteria is the plural form of “bacterium” and so should be written as plural, as in “Many bacteria are harmless.”
实用短语
常用短语
单词用法
germ：微生物的俗称，专指引起人体生命的病菌。
bacteria(系bacterium的复数形式)，泛指任何在动植物体中广泛传播的微生物细菌，其中有的对生命体无害，有的能导致传染病或严重疾病，如天花、霍乱等。
virus：技术用语，特指病毒或过滤性病原体。
microbe：本义指在显微镜下才能见到的微生物，现在多指引起疾病的细菌。
bug：非正式用词，指细菌或由病毒所引起的传染病。
pathogenic bacteria 致病菌；病原菌
photosynthetic bacteria 光合细菌
harmful bacteria 有害细菌；病菌
同义词辨析
同根词
词根：bacteria
adj.bacteriological细菌学的，[微] 细菌学上的
bacteriologic细菌学的
n.bacteriology细菌学
bacteriolysis[生化] 溶菌作用；细菌分解处理