Ozone is a highly reactive form of oxygen gas.

臭氧是一种高度活跃的氧气形态。

《柯林斯英汉双解大词典》

At the end of a cycle you have to harvest the material out, you have to reseed the filaments and restore it to where it's ready to receive the reactive gas — and that's a lot of nonproductive time.

在一个周期结束时，您将成品取出时，你必须在已经准备好接受反应气体的地方补种的细丝。

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Nitrogen, which, makes up about 78% of the Earth's atmosphere, is an inert gas but it has more reactive forms.

虽然组成地球大气78%的氮是一种惰性气体，但它却有多种化学式。

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Oxygen, for instance, is a reactive gas that ought to end up quickly bound within rocks.

ECONOMIST: Extra-terrestrial life

Clusters of zinc atoms then mix with a reactive gas, usually oxygen, and cool to a solid.

FORBES: The science of small

But the traffic increase has slowed progress in reducing emissions further, and people in many areas still suffer from nitrogen-related air pollution, including small particulates that get sucked deep into the lungs, and ground-level ozone - a strongly irritant gas formed by the action of sunlight on reactive nitrogen.

BBC: Nitrogen pollution 'costs EU up to ?280bn a year'