반응형 modernstandards1 [Water Quality and Safety] 깨끗한 물의 중요성: 역사적 관점 [Water Quality and Safety] The Importance of Clean Water: A Historical Perspective (깨끗한 물의 중요성: 역사적 관점) Water is a basic human need and is essential for survival. It is not just important to have access to water, but it is equally important to have access to clean and safe water. Clean water is necessary for good health, hygiene, and sanitation. This is why the history of water and its quality i.. 2023. 3. 31. 이전 1 다음 반응형