After monitoring the air in the operating room, the author found that the air was polluted by various chemical disinfectants which had exceeded the standards seriously.
通过对手术室空气进行监测，发现手术室空气中各种化学消毒剂的含量严重超标，对手术室空气造成了严重的污染。
It has to be noticed that the air we breathe is already seriously polluted by the exhaust factories and vehicles give off.
必须注意的是：我们呼吸的空气已经被工厂和交通工具所释放的废气严重污染了。
Such gases as the carbon monoxide gas that factories and cars vent polluted the air seriously.
工厂和汽车出的一氧化碳一类气体严重污染大气。
Such gases as the carbon monoxide gas that factories and cars vent polluted the air seriously.
工厂和汽车出的一氧化碳一类气体严重污染大气。
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