记忆方法
记住“bacterium”这个单词，可以将它与“bacteria”和“ium”结尾的单数名词形式关联。想象这个单词是“bacteria”这个复数形式的一个成员，它的单数形式就像是从细菌群中选出一个个体。由于“ium”常常用于表示单数的科学名词，比如“universe”和“monument”，你可以记住“bacterium”是“细菌”的单数形式。
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词族 · bacterium
词形变化
派生词
英语词源
- bacterium
-
bacterium: [19] Bacterium was coined in the 1840s from Greek baktérion, a diminutive of báktron ‘stick’, on the basis that the originally discovered bacteria were rod-shaped. At first it was sometimes anglicized to bactery, but the Latin form has prevailed. Related, but a later introduction, is bacillus [19]: this is a diminutive of Latin baculum ‘stick’, and the term was again inspired by the microorganism’s shape. Latin baculum is also responsible, via Italian bacchio and its diminutive form bacchetta, for the long French loaf, the baguette.
=> bacillus, baguette, débacle, imbecile - bacterium (n.)
- c. 1848, singular of bacteria (q.v.).
权威例句
- 1. They found a bacterium visible to the human eye.
- 他们发现了一种肉眼可见的细菌。
- 2. Treatment is supplemented with a course of antibiotics to kill the bacterium.
- 治疗期间辅以一个疗程的抗生素注射来杀灭细菌。
- 3. They have isolated the bacterium in its pure form.
- 他们已经把细菌分离出来,使它们处于较纯的状态.
- 4. 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.
- 5. Classification of the Haemophilus - like bacterium has been only tentatively determined.
- 在分类上把这种细菌只是暂时性地作为类嗜血杆菌.