When light falls on the nanotubes, they release energetic charge carriers, which split the water molecules inside them into two reactive components - hydroxide radicals and hydrogen ions.

当阳光照射在纳米管上时，纳米管释放出高能量的载荷子，使得水分子分解为两种活性成分-氢氧自由基和氢离子。

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Ferguson said this was done to shield the particles from the air because the silicon nanopowder is so reactive it could theoretically generate hydrogen with exposure to even minimal amounts of water.

Ferguson说这样做避免了纳米硅颗粒与空气中微量水发生反应的可能性。

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Pharmaceutical equipment and high purity water systems are designed so that product contact surfaces are not reactive, additive, or absorptive so the drug product is not adversely altered.

为了使得药品没有不利变化，在设计制药设备和高纯水系统时，保证它们和产品的接触面是不具有反应性、添加性和吸收性的。

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He reasoned that by adding the least reactive ingredients of his potion first and by using broken-down water molecules instead of intact H2O, he could prevent the premature gelling that had plagued his peers.

FORBES: The Science of Small

The highly reactive oxygen combines with hydrogen and carbon monoxide on the fuel side to make water and CO 2.

FORBES: Pip-squeak Power Plant

Until the 20th Century, the nutrient element only came to Earth in a reactive form that is usable by plants and animals, thanks to certain microbes in soil and water (and to a smaller extent in lightning strikes).

BBC: Leaving our mark: Fossils of the future