n.公共衛(wèi)生；衛(wèi)生設備；下水道設施

Sanitation is necessary to prevent this. 要防止病從口人就必需講究衛(wèi)生。

They live in conditions of appalling sanitation. 他們在十分惡劣的衛(wèi)生條件下生活。

Studies show that the disease has been cut by 77 percent in some areas through providing better water and sanitation. 研究表明，通過提供更好的水和衛(wèi)生設備，有些地區(qū)的發(fā)病率減少了77%25。

The Romans, for instance, constructed aqueducts to bring fresh water to their towns and sewers to provide sanitation. 例如羅馬城通過構(gòu)筑溝渠引清水洗刷城鎮(zhèn)，建造下水道提供衛(wèi)生設施。