반응형 naturalresourceprotection1 [Water Use and Management ] 시대를 관통하는 물 절약: 과거의 교훈 [Water Use and Management ] Water Conservation Through the Ages: Lessons from the Past (시대를 관통하는 물 절약: 과거의 교훈) Water conservation is an important issue that has been on the minds of humans for centuries. In the past, people had to rely on natural sources of water, such as rivers and wells, and had to use it wisely. With the advent of modern technology, we have access to a seemingly endless suppl.. 2023. 4. 5. 이전 1 다음 반응형