Throughout history man has changed his physical environment in order to improve his e out of the exhausts of motor vehicles. Smoke from factories pollutes the air of industrialized areas and the surrounding areas of the countryside. The pollution of mitting suicide. Therefore, effective measures should be taken and laws passed to conserve environment. Otherwise,man is certain to suffer from the serious consequences caused by this lack of care for his living surroundings.
现在，环境保护比以往任何时候都更为紧迫。我们知道，对环境的大规模破坏已经带来负面影响，甚至严重威胁到人类的生存。对这些问题漠不关心将意味着自我毁灭。因此，应采取有效措施并通过法。