<prompt> Translate the following text to SwahiliA new Clean Air Act for the 21st century must build on this founding principle -modernization and better technology will mean a progressive new way to accomplish these long-standing environmental goals.  <response>: Sheria mpya ya hewa safi ya karne ya 21 lazima ijengwe juu ya kanuni hii ya msingi - kisasa na teknolojia bora itamaanisha njia mpya ya maendeleo ya kufikia malengo haya ya muda mrefu ya mazingira. 