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| 51. | sanitation of swimming pool |
| 游泳池卫生 |
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| 52. | toilet paper fixture |
| 卫生纸盒 |
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| 53. | elementary knowledge of hygiene and sanitation |
| 卫生常识 |
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| 54. | plant sanitation |
| 工厂卫生 |
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| 55. | airfield hygiene |
| 机场卫生 |
|
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| 56. | sanitation cutting |
| 卫生伐 |
|
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| 57. | sanitary condition |
| 卫生情况 |
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| 58. | sanitation waste |
| 卫生废物 |
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| 59. | sanitary pedology |
| 卫生土壤学 |
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| 60. | public health room |
| 卫生保健室 |
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