cheongjeonghwa
purification (rendre pur)·clarification
purification
우리는 환경 청정화를 위해 노력해야 합니다.
urineun hwangyeong cheongjeonghwa-reul wihae noryeokhaeya hamnida.
Nous devons nous efforcer de purifier l'environnement.
D'autres mots qui commencent comme 청