Lakes and rivers that are heavily polluted with organic material are liable to contain less dissolved oxygen than does nonpolluted water.
受到有机物严重污染的湖泊和河流，比起未受污染的水来说，其中的溶解氧通常要少一些。
With almost no heavy industry on South Island, the air, water, and land are all free of pollution.
南岛上几乎没有重工业，空气、水和土地全都未受污染。
In unsullied damp brown circles of soft earth the roses bloomed serenely against the pink Mexican wall.
在未受污染的圆形花坛潮湿柔软的褐土上，映衬着粉色的墨西哥墙，玫瑰花安详地开放。
"Dysentery is spread in food or water contaminated by feces, often by infected inpiduals with unwashed hands."
受染者的粪便可污染食物或水,因此常经由受染者未洗手即处理食品而传播。
contaminated clothing,eg by radio-active material
受污染的衣物（如受放射性物质污染）
The overall environment in the whole country has not yet affected by radiation pollution and the radiation environmental quality remains at the past level.
全国整体环境未受到放射性污染，辐射环境质量仍保持在原有水平。
at-receiver mitigation measure
在受污染处采取的减轻污染措施
"Clean:Free from dirt, stain, or impurities; unsoiled."
干净的:无灰尘、污迹或杂质的;未污染的.
such as polluted air and water.
如受污染的空气和水。
Live in a polluted environment,
生活在受污染的环境中，
the fetor of polluted waters;
受污染水体的臭气；
Compared with the previous year, the order of the pollution level remained same and the pollution extent is quite close.
与上年相比，污染轻重顺序未变，污染程度相近。
pollution episode
污染敏感时刻; 特别容易受污染威胁的时候
China's southern waters are known to be polluted by industrial discharge and untreated human waste.
中国南部水域受到工业排废以及未经处理的生活垃圾的排放的污染。
But tests carried out by the Hong Kong government failed to8) uncover any9) contaminated crabs for sale.
但是由香港政府所执行的检验并未测出显示出任何市面上贩售的大闸蟹有受到污染。
Moreover, there is also a temporal element to these externalities, for many of the affected inpiduals belong to future generations.
另外，这些客观性还有一些临时因素，因为许多受污染的个体属于未来的几代。
and for the uncontaminated and unborn children.
和未受感染的人，还有未出世的孩子。
air sensitive receiver
易受空气污染影响的受体