求翻译：都市空氣汙染的問題越來越嚴重，幾乎所有的工業國家都必須面對這個問題。大部分的環保團體一直努力希望透過各種活動來鼓勵大家搭乘火車、巴士等大眾運輸工具；但效果並不好是什么意思？

Urban air pollution is getting worse , almost all the industrial countries must face this problem.

The issue of metropolis air pollution is getting more and more serious, almost all industrial countries must face this issue. Majority of environmental group has hoped encourages everybody to travel by the train, bus and other mass transportation tools diligently by various activities; But the effec

正在翻译，请等待...

Urban air pollution is a growing problem, in almost all industrial countries must face this problem. Most of the environmental groups have been working through a variety of activities to encourage people to ride trains, buses and other public transportation, but doesn't work as well

正在翻译，请等待...