These plasmids occur naturally in nature; they were discovered in micro-organisms and they also confer some biological properties onto micro-organisms.

这些质粒在自然界中自然存在；它们是在微生物中发现的，它们也赋予了微生物一些生物学特性。

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Some elements such as uranium, commonly used as fuel in nuclear power plants, are always radioactive; there is no nonradioactive form of them that naturally occurs in nature.

一些如铀一般的元素，通常在核电厂用作核燃料，都是有放射性的；这些元素由于自身的性质是没有无放射性状态的。

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In the rural the naturally matured tomatoes have this nature.

在乡下自然成熟的番茄具有这种性质。

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Again, these plasmids occur naturally in nature; they were discovered particularly in micro-organisms have plasmids that confer biological properties onto them.

此外,质粒存在于自然界中,质粒是在微生物中发现的,它们也赋予了微生物一些生物学特性

耶鲁公开课 - 生物医学工程探索课程节选

What is naturally right what is right by nature in peace time will not be the same as what is naturally right or right by nature in times of war.

太平时的自然正当,天生的正当将非常不同于,战时的自然正当与天生的正当,正常情势的正当。

耶鲁公开课 - 政治哲学导论课程节选

Electricity is not naturally occurring in nature.

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The results, reported in this week's Nature, suggest naturally occurring rays enhance seed-formation rates by a factor of ten.

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