But the juvenile delinquency is already the world's "three major public hazards" together with environment pollution and drug taking and drugtrafficking. The question must arouse special attention.
2
作为当代三大主要污染源之一，噪声污染已成为一个世界性的问题并且引起了世人的关注。
As the one of the three primary source of pollution, noise pollution has become worldwide problem and aroused earthling attention.
点击反馈