1. Sanitation did not become widespread until the 19th century. 直到19世纪，卫生设施才开始普及。
2. The location is exceptionally poor, viewed from the sanitation point. 从卫生角度来看，这个地段非常糟糕。
3. More than 80% of those cases can be attributed to contact with contaminated water and a lack of proper sanitation. 其中80%以上的病例可归因于接触了受污染的水和缺乏适当的卫生设施。
4. Macfarlane looked to Japan, which was also developing large cities about the same time, and also had no sanitation. 麦克法兰把目光投向了日本，彼时日本也在发展大城市，同样缺乏卫生设施。
5. Reinfestation after treatment is an indicator of poor sanitation. 治疗后再次感染表明卫生状况较差。
