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.
虽然交通很拥挤，我们准时到达火车站。
Although the traffic was heavy, we got to the railway station on time.
官方说虽然上下班时间交通很紧张，但是拥挤还是要比以前减轻好多。
Officials say though the rush hour went great and congestion was lighter than usual.
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