公交车和公交车专用道的数量增加了，司机们也根据其行程所用时间获得奖励或受到惩罚。
The number of buses and bus lanes were increased, and drivers were rewarded or punished according to the time they took.
第二，随着大城市的汽车和公交车数量的增加，空气污染已成为在大城市生活的另一个劣势。
Second, with the increase of cars and buses in big cities, air pollution has become another disadvantage of living in big cities.
关于这个问题，有很多原因。一个主要原因是车辆增加的数量远快于道路的建设。另一个主要原因是私家车过多而公交车不够。
There are several reasons for this problem. One of the main reasons is that the number of vehicles is increasing much more rapidly than building of roads.
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