I have always been curious about two things. First, why are traffic jams always heavier on Mondays than on other weekdays? Second, I wonder why traffic is heavier when it rains. I know drivers get more cautious on rainy days, but even when it rains so little that I can hardly feel the raindrops, the traffic gets a lot heavier than on sunny days. Why?
有兩件事情一直讓我感到好奇。第一，為什么周一的交通擁堵總是比其它工作日更嚴重？第二，我想知道為什么下雨時交通更擁堵。我明白，司機在雨天開車更小心，但即使是雨小得連雨滴都幾乎感覺不到，交通仍要比晴天時擁堵得多。這是為什么呢？
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