noun 다운로드 🔗공유 하수, 폐수 Any water that has been used in some human domestic or industrial activity and, because of that, now contains waste products. Examples : "The factory treats its wastewater before releasing it into the river to protect the environment. " 공장은 환경을 보호하기 위해 강으로 방류하기 전에 폐수를 처리합니다. environment utility industry science AI와 채팅어휘 게임독해 연습