Ourenvironmentisn'tasgreenandbeautifulasitshouldbe.Ther...
问题详情：Ourenvironmentisn'tasgreenandbeautifulasitshouldearesteelmonstersblockingoutthesun.blowingoutdangeroussmoke,andlettingoutpoisonouschemicalsintorivers,carsproducingharmfulwastegas,peoplethrowi...