A:I can't believe how polluted the air is. I can hardly breathe.
B:Yes. Pollution is hanging like a brown cloud over the city today.
A:The air would be cleaner if people stopped driving and started taking buses.
B:Well, that would help. But I don't think cars are the only problems.
A:What else do you think causes pollution?
B:Well, the factories pollute the air a lot, too. Dirt and smoke are pouring from factories and spoiling the air.
A:Yes, that's quite true. But we can't close down the factories, and people can drive less.
B:Sure,but how are you getting people to do that?
A:Well,I'd improve the bus service and charge less.
B:That's a good idea.
A:我简直不敢相信空气被污染的程度,无法喘气了。
B:是啊!今天的污染像乌云一样遍布全城。
A:如果人们不开车,开始乘公汽,空气会好些。
B:也许有帮助,但我认为汽车不是惟一的原因。
A:还有什么?
B:工厂。工厂的脏物、烟气的排放污染了空气。
A:的确,但我们不能关闭工厂,而人们可以少开车。
B:当然,但怎样才能使人们少开车呢?
A:提高公交服务,少收费。
B:好主意。