例句與造句

1. Concerted efforts within the community can provide substantial impetus to clean air initiatives . for instance , i know that our business community has taken the initiative to sign a clean air charter
   民間共同努力，可以有力地推動(dòng)凈化空氣的工作，例如我知道商界就正自發(fā)地聯(lián)合簽署清新空氣約章。
2. It's difficult to find clean air initiative in a sentence. 用clean air initiative造句挺難的