Car exhaust has seriously polluted the air and people's health is greatly endangered.
汽车废气已经严重污染了空气，人们的身体受到了严重威胁。
The air in the city is seriously polluted.
这个城市的空气污染很严重。
The polluted air in the city seriously endangers the people's health.
城市中污染的空气严重地危及人民的健康。
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。
In my hometown, the air is polluted seriously.
在我的家乡，空气污染十分严重。
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。
Our air is seriously polluted.
我们的空气污染严重。
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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