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| 51. | navigational areas |
| 航行区域 |
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| 52. | channel navigation |
| 水道航行 |
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| 53. | navigating allowance |
| 航行津贴 |
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| 54. | navigational lighting |
| 航行照明 |
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| 55. | navigation area |
| 航行海区 |
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| 56. | Navigation within Port Area |
| 港内航行 |
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| 57. | navigation light buoy |
| 航行灯标 |
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| 58. | navigational duty |
| 航行任务 |
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| 59. | navigation shape |
| 航行号型 |
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| 60. | Navigational Warning |
| 航行警告 |
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