air act 예문

• Today, even with twice as many vehicles on the road, dangerous air pollutants have been reduced by more than 60% since the Clean Air Act was implemented.
  LA 스모그 청정대기법이 시행된 이래로, 차량의 숫자는 두배가 되었지만 유해한 대기오염물질은 60%이상 감소되었습니다.