Microorganism

[maɪkrəʊ'ɔːg(ə)nɪz(ə)m] or [,maɪkro'ɔrgən,ɪzəm]

解释:

(noun.) any organism of microscopic size.

尤金伲亚整理--From WordNet

解释:

(n.) Any microscopic form of life; -- particularly applied to bacteria and similar organisms, esp. such are supposed to cause infectious diseases.

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