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| 51. | harbour management |
| 港口管理 |
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| 52. | the mining of a harbour |
| 港口布雷 |
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| 53. | port of delivery |
| 交货港口 |
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| 54. | port and harbor constructio |
| 港口建设 |
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| 55. | harbor environment |
| 港口环境 |
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| 56. | harbor siltation |
| 港口淤积 |
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| 57. | harbor improvement |
| 港口整治 |
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| 58. | class of harbours |
| 港口分类 |
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| 59. | harbor regulations |
| 港口规章 |
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| 60. | port congestion |
| 港口积压 |
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