OH-radical is the most reactive and powerful oxidizing active oxygen in the atmosphere. It will combine with Volatile Organic Compound (VOC) to form a noxious compound which will harm people health.

氢氧基（OH）是活性氧中反应性和氧化性极强的氧化物，并会跟挥发性有机化合物（VOC）结合成一些对有害物质，长期身处于这环境绝对是危害人体健康的。

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Hydroxyl radical (OH) plays a key role in the tropospheric chemistry, so the measurement of its concentration is very important.

氢氧自由基(OH)在对流层大气化学中起着重要的作用，因此，对其浓度的测量具有重要意义。

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The OH radical initiated degradation of ethane was possibly one of the main sources of H2O2, MHP and EHP in the troposphere.

OH自由基引发的乙烷降解反应可能是对流层大气h 2 O 2, MHP及EHP的重要来源之一。

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We need to practice big, radical shrugs: the all-too-rare and oh-so-powerful, "Oh well, " of a woman who has accepted that she couldn't be everywhere at once or be everything to everybody.

CNN: Working moms, don't try to be perfect at home