Crosswalks are marked parts of the road where pedestrians have the right of way to cross. Although they seem like products of the modern world, crosswalks have actually been around for more than 2,000 years. The first crosswalks were invented in the ancient city of Pompeii, Italy. They consisted of large rocks placed on the road. When it rained heavily, they allowed people to cross the road without stepping in water or mud on the ground. They also forced horse-drawn carts to slow down and watch out for the pedestrians.
行人穿越道是道路上有标记且行人有通行路权的部分。虽然它们看似是现代世界的产物，但行人穿越道其实已经存在超过两千年了。第一条行人穿越道是在义大利古老的城市庞贝被发明出来的。它们由放置在路上的大石头组成。下大雨时，它们让人们能穿越马路而不会踩到地上的水或泥巴。它们也迫使马车慢下来留意行人。
生活必备字词：
product n. 产物
have been around for + 一段时间 已存在若干时间
consist of... 由……所组成
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本文节录自《常春藤生活英语》杂志，完整内容请见一月号。
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