1、
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These steps , known to microbiologists as Koch's postulates, were established in the 19 th century.
这些微生物学家称之为柯赫氏法则的步骤确立于19世纪.
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Almost all of the techniques that microbiologists use are customized for life as we know it.
几乎所有微生物学家采用的技术都是根据已知生命量身定做的.
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