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| 31. | road transport system |
| 公路运输系统 |
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| 32. | highway administration |
| 公路管理 |
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| 33. | Highway Command |
| 公路指挥部 |
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| 34. | highway approach |
| 公路引道 |
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| 35. | Highway Density |
| 公路密度 |
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| 36. | highway traffic sign |
| 公路交通标志 |
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| 37. | highway lighting |
| 公路照明 |
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| 38. | Highway aesthetics |
| 公路美学 |
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| 39. | highway traffic law |
| 公路交通法 |
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| 40. | highway construction |
| 公路施工 |
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