良好的卫生设施和垃圾处理系统是城市卫生的重要保障。

Good ___sanitation systems with proper waste disposal are essential for urban health.

这个村庄缺乏基本的卫生设施，导致疾病传播。

The village lacks basic ___sanitation facilities, leading to the spread of diseases.

改善城市卫生条件可以大幅减少疾病传播。

Improving urban ___sanitation can significantly reduce the spread of diseases.