在现代，大气铅中毒的90％以上来自汽车废气，如含铅汽油的燃烧的结果。因

在现代，大气铅中毒的90％以上来自汽车废气，如含铅汽油的燃烧的结果。因此铅中毒是在城市中一个特别严重的威胁，特别是对谁有住在附近繁忙的城市街道年幼的孩子。但大气铅污染甚至有一个全球性的影响

結果 (中文) 3:

In modern times, more than 90% of the lead poisoning in the atmosphere comes from automobile exhaust gases, such as the burning of leaded petrol. Therefore lead poisoning is a particularly serious threat in the city, especially for young children who have lived in the busy city streets nearby. But there is even a global impact of lead pollution in the atmosphere.