德克萨斯农工大学交通研究所的研究工程师凯文·鲍克说，虽然智能交通灯对一些城市特别有帮助，但有些城市太拥挤了，只有大幅减少道路上的汽车数量才能有效改变拥堵的局面。

Kevin Balke, a research engineer at the Texas A&M University Transportation Institute, says that while smart lights can be particularly beneficial for some cities, others are so jammed that only a sharp reduction in the number of cars on the road will make a meaningful difference.

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没有人知道发生了什么事的孩子，包括摄影师凯文卡特谁离开这个地方只要照片拍摄。

No one knows what happened to the child, including the photographer Kevin Carter who left the place as soon as the photograph was taken.

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46岁的摄影师凯文证实，他已经将黑色背景的有机土豆照片卖给了一位不愿透露姓名的欧洲商人。

Kevin Abosch, 46, confirmed he had sold the photograph of an organic potato shot on a black background to an unnamed European businessman.

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