반응형 HygienePractices1 [Water Quality and Safety] 역사 속의 물 위생: 종합적인 개요 [Water Quality and Safety] Water Hygiene Throughout History: A Comprehensive Overview (역사 속의 물 위생: 종합적인 개요) Water is essential to life, but throughout history, it has also been a source of disease and infection. The importance of clean water and good hygiene practices has been recognized for centuries, and people have developed various methods to ensure that water is safe to drink and use. In th.. 2023. 4. 3. 이전 1 다음 반응형