来自《耶鲁大学开放课程：生物医学工程探索 第4集 第4集》
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that means that即使把它放在 -
that micro-organism can survive有致死剂量化学物质的环境中 -
being exposed to this normally deadly chemical without dying.它也能存活下来 -
This is one of the biological properties,这就是这类生物学特性之一 -
the naturally occurring properties of plasmids,它是质粒所具有的自然特性 -
is that they exist in microbial populations and这些质粒存在于微生物群体中 -
they confer on them resistance并赋予微生物抗性 -
from toxins that would ordinarily kill them.使它们免于被毒素杀死 -
So being a micro-organism that got假如一个微生物 -
a plasmid that give you resistance to an antibiotic因含有质粒而具有抗生素抗性 -
would be a good thing -这实在是一桩美事-- -
that gave you resistance to something在同样的环境下