同样到2025年，世界2/3的人口将在城市居住，因此交通拥挤和环境污染问题将日益突出，影响大多数人的生活。
Also by 2025, twothirds of the world's people will live in cities, so traffic jams and pollution will loom3 large in most people's lives.
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。
In some cities, like Atlanta, this has meant a quick increase in pollution and traffic congestion as its population has grown.
一个地方的人口越多，其对水，交通和垃圾处理的需求就会越大。
The greater the population there is in a locality, thegreater the need there is for water, transportation, and disposalof refuse.
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