名詞 pollution:

1. undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities
2. the state of being polluted
   同義詞：befoulment, defilement
3. the act of contaminating or polluting; including (either intentionally or accidentally) unwanted substances or factors
   同義詞：contamination

1. The pollution had destroyed ozone layer and caused many changes in weather.
   污染破壞了臭氧層，并引起了許多天氣變化。
2. Pollution of the water supply reached a level pernicious to the health of the population.
   水源污染已經(jīng)達到危及居民健康的程度。
3. Pollution poses a threat to the continued existence of this species.
   污染對這一物種的繼續(xù)生存造成了威脅。
4. Scientists think that the Arctic is endangered by pollution.
   科學(xué)家們認為北極面臨著被污染的危險。
5. It will cause pollution and the destruction of our seas and oceans.
   這會引起污染，破壞我們的海洋和江河。
6. Many beautiful fish are fast disappearing because of the severe pollution.
   因為污染嚴重，許多美麗的魚類正在面臨絕種。
7. We are sad about the pollution of our beaches with oil.
   我們很痛心石油對我們海灘的污染。
8. Many young people could not resist the spiritual pollution.
   很多年輕人不能抵制精神污染。

pol.lu.tion

n.（名詞）
The act or process of polluting or the state of being polluted, especially the contamination of soil, water, or the atmosphere by the discharge of harmful substances.
污染：造成污染的行為或過程或被污染的狀態(tài)，尤指因為排放有害物質(zhì)而造成的對土壤、水或大氣的污染
Something that pollutes; a pollutant or a group of pollutants:
污染，污染物：造成污染的東西；一種或一組污染性物質(zhì)：
例句：
Pollution in the air reduced the visibility near the airport.
空氣中的污染降低了機場附近的能見度