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他说：「停车场的问题出在，它累积了很多污染物，如汽油、油污、重金属及沉积物，它们并不会被地表吸收。」
The problem with parking lots is that they accumulate a lot of pollutants - oil, grease, heavy metals and sediment - that cannot be absorbed by the surface, " Engel said."
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