Ten years ago, there were many narrow streets.But now many streets have been widened. So buses and cars can go more quickly than before. Ten years ago , it was not convenient to go from the north of the city to the south. But now, you are sure to reach anywhere in less than an hour. To our joy, we have two underground lines and many more are being built. We seldom find traffic jam in rush hours. So we don't have to worry about going out. With the development of science and technology, the transportation in Shanghai will become all the better.
十年前，上海有很多狭窄的街道，但现在很多街道都被拓宽了。所以公共汽车和小汽车可以比以前走得更快。十年前，从城北到城南不方便。但现在，你肯定能在不到一个小时内到达任何地方。令我们高兴的是，我们有两条地铁线路，还有更多的正在建设中。我们很少在高峰时间发现交通堵塞。所以我们不必担心出去。随着科学技术的发展，上海的交通将会变得更好。