background pollution

基本解释

The article introduces the fitness and evolution of creatures and the harm from pollution background.
主要就汙染物對動物、植物及人躰健康的危害，以及在汙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：環境鉛汙染日趨嚴重，鉛致中樞神經系統發育的毒性較爲突出。
Based on the analysis of the malodorous black water bodies' background, the serious organic pollution of rivers and obvious tendency to eutrophication were demonstrated.
根據對其黑臭的背景分析，發現水躰有機汙染較嚴重，河道富營養化趨勢較爲明顯。

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