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| 51. | sanitary condition |
| 卫生情况 |
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| 52. | conservancy of sanitation |
| 卫生管理 |
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| 53. | atmospheric hygiene |
| 大气卫生 |
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| 54. | sanitation cutting |
| 卫生伐 |
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| 55. | toilet paper dispenser |
| 卫生纸卡 |
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| 56. | airfield hygiene |
| 机场卫生 |
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| 57. | toilet paper fixture |
| 卫生纸盒 |
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| 58. | sanitary pedology |
| 卫生土壤学 |
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| 59. | elementary knowledge of hygiene and sanitation |
| 卫生常识 |
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| 60. | sanitation of swimming pool |
| 游泳池卫生 |
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