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| 31. | the state of sanitation (clean or dirty). |
| 卫生干净或脏的状态。 |
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| 32. | "Labor protection, occupational safety and sanitation" |
| 劳动保护和职业安全与卫生 |
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| 33. | International Reference Centre for Water and Sanitation |
| 国际供水和卫生参考资料中心 |
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| 34. | and children's books on water and sanitation. |
| 以及有关饮水和卫生的儿童书籍。 |
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| 35. | Regional Water and Sanitation Group (East Africa) |
| 区域水和卫生小组（东非） |
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| 36. | International Drinking Water Supply and Sanitation Decade |
| 国际饮水供应和卫生十年 |
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| 37. | Senior Project Officer for Water and Sanitation |
| 水与卫生高级项目干事 |
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| 38. | They live in conditions of appalling sanitation. |
| 他们在十分恶劣的卫生条件下生活。 |
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| 39. | sanitation is the best defense against disease. |
| 保护卫生是每个人的职责。 |
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| 40. | SANITATION FOR A HEALTHY FUTURE: SOME FACTS |
| 为了健康的未来提倡卫生：若干情况 |
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