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| 41. | highway structures |
| 公路建筑物 |
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| 42. | highway contracting |
| 公路契约 |
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| 43. | Highway database |
| 公路数据库 |
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| 44. | highway tread patter |
| 公路花纹 |
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| 45. | highway design standard |
| 公路设计标准 |
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| 46. | Highway information system |
| 公路信息系统 |
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| 47. | highway ecology |
| 公路生态学 |
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| 48. | Highway surveillance |
| 公路调查 |
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| 49. | highway hypnosis |
| 公路催眠 |
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| 50. | road haulage undertaking |
| 公路运输业 |
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