A: Would you like a window or an aisle seat, Mr. Smith?您想要靠窗还是靠过道的座位，史密斯先生。 B: I want an aisle seat as close to the exit door as possible, please.我想要靠过道的座位，尽可能靠近出口的。 A: Very well. Do you have any bags to check?好的，您有行李要托运吗？ B: No, I just have this one small bag.没有，我只有这个小包。 A: Here you are, seat 12c. Please go to gate 23 after passing through the security checkpoint.给您的票，座位是12c。通过安全关卡后请到23号门。 B: Thank you.谢谢你。 A: Have a nice day.祝您愉快。 B: You, too.你也是。 The public transportation systems in most big cities in America are very good. 在美国的大城市里，大多数都有很齐全的公共交通系统。
New York, especially, has one of the largest and most useful subway and bus systems in the world. 尤其是纽约拥有的市内地铁和公交车系统就是全世界最大、利用率最高的地区之一。
Public transportation helps to cut down on pollution and traffic. In big cities, with so many people, this is a very important problem. 公共交通系统可以减少污染和缓解交通负担。对于人口众多的大城市，这是个非常重要的问题。
However, Americans do love their cars. The average family has two. So much more money goes into building roads, than new subway or train lines. 然而，美国人是爱车的。平均每个家庭的小汽车拥有量为两辆。因此用于修建公路的资金往往比用于修建新的地铁线和火车线路的资金多得多。
In some cities, like Atlanta, this has meant a quick increase in pollution and traffic congestion as its population has grown. 在象亚特兰大这样的一些城市，随着人口的增加，也同时意味着污染和交通阻塞的日益严重。
