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81. | per kilometre of road |
| 每公里道路 |
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82. | combinatorial path |
| 组合道路 |
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83. | Road safety, Traffic safety |
| 道路安全 |
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84. | lay-out of road |
| 道路布置 |
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85. | topping of road |
| 道路面层 |
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86. | road rehabilitation |
| 道路修复 |
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87. | road reconnaissance |
| 道路侦察 |
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88. | international road |
| 国际道路 |
|
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89. | prehistoric roadway |
| 史前道路 |
|
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90. | connecting path |
| 连接道路 |
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