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viruses

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病毒

难易程度:

viruses为短语/超纲词汇
1. Some viruses incubate very rapidly.
    有些病毒繁殖得很迅速.

2. Much later, scientists discovered viruses.
    过了很久以后,科学家发现了病毒。

3. Meanwhile, another powerful killer of bacteria and viruses was discovered, again by accident.
    与此同时,人类又发现了一种杀灭细菌和病毒的有效药物,这次也纯属偶然。

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