音标:[ˈpə:pl bækˈtiəriə] ;
紫色细菌
词型变化:名词复数形式 : purple bacterias

purple bacteria的用法和样例:

例句

  1. The results revealed that those bacteria containing photosystems in which oxygen is not produced, such as purple bacteria, evolved first.结果表明,这些含有光系统的细菌并没有产生氧气,如紫色细菌,首先形成。

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