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繁荣的城市马路上,汽车川流不息;街道上竖立的各种漂亮的广告牌,有漆画的、喷涂的……殊不知,孩子们正暴露于无处不在的铅污染的环境中。
There are endless streams of cars in the prosperous city streets, beautiful billboards erected on the streets, lacquered and painted ... Everyone knows that children are exposed to ubiquitous lead-polluted environments.