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(单词翻译:双击或拖选)
Each fall thousands of Coho salmon1 flocked to northwest rivers to spawn2, but many never get the chance, especially near big cities like Seatle.
And in some of these urban areas, up to ninety percent of the female were dying before they spawned3, which is not a good thing for a population .Jew Anne Sprangburg, a toxicologist affiliated4 with the Northeast Fishery Science Centre.
Researchers suspected that these deaths are partly a matter of bad timing5. The fish often reaches the streams during the first showers of the rainy season, which flush chemicals from roads and parking lot into the water. Now Sprangburg and her colleagues have produced the first direct evidence that this runoff kills the salmon. Their study is in the journal of Pride Ecology. The researchers found that fish exposed to stormwater from Seatle highways quickly grew sick and died. Surprisingly though, the salmon didn't seem to mind taking a dip in the cocktail6 of common road pollutants,inlcuding hydrocarbons7 and metals. That detail suggests that the current ingredient in the runoff may be a different kind of chemical or lethal8 combination of several compounds.
There is a lot of whole different matter that we haven't been able to measure or don't have the capability9 to measure at the moment.
However, Scrangburg says there is a way to help the fish even before scientists hunt down the culprits. Her team also found that filtering runoff to just a few feet of soil makes stormwate safe for salmon. Cities can implement10 the simple form of clean water technology by building more systems, including roadside gardens to collect runoff from paved areas and pass it to soil before it enters urban waterways,literally a quick and dirty solution.
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1 salmon | |
n.鲑,大马哈鱼,橙红色的 | |
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2 spawn | |
n.卵,产物,后代,结果;vt.产卵,种菌丝于,产生,造成;vi.产卵,大量生产 | |
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3 spawned | |
(鱼、蛙等)大量产(卵)( spawn的过去式和过去分词 ); 大量生产 | |
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4 affiliated | |
adj. 附属的, 有关连的 | |
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5 timing | |
n.时间安排,时间选择 | |
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6 cocktail | |
n.鸡尾酒;餐前开胃小吃;混合物 | |
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7 hydrocarbons | |
n.碳氢化合物,烃( hydrocarbon的名词复数 ) | |
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8 lethal | |
adj.致死的;毁灭性的 | |
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9 capability | |
n.能力;才能;(pl)可发展的能力或特性等 | |
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10 implement | |
n.(pl.)工具,器具;vt.实行,实施,执行 | |
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