background pollution

常見例句

The article introduces the fitness and evolution of creatures and the harm from pollution background.
主要就污染物對動物、植物及人體健康的危害，以及在污染條件下生物的適應與進化作一綜述。
BACKGROUND: Environment pollution due to lead is severe day by day, and the lead-induced developmental toxicity of central nervous system is prominent.
背景：環(huán)境鉛污染日趨嚴重，鉛致中樞神經(jīng)系統(tǒng)發(fā)育的毒性較為突出。
Based on the analysis of the malodorous black water bodies' background, the serious organic pollution of rivers and obvious tendency to eutrophication were demonstrated.
根據(jù)對其黑臭的背景分析，發(fā)現(xiàn)水體有機污染較嚴重，河道富營養(yǎng)化趨勢較為明顯。

These were chosen to minimise the confusing effects of background pollution that might be found in more densely populated and highly industrialised areas.
ECONOMIST: Weather and pollution