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| 21. | mid channel buoy |
| 中央航道浮筒 |
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| 22. | buoy installation |
| 浮筒安装 |
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| 23. | telemetering wave buoy |
| 遥测波浪浮标 |
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| 24. | life buoy light |
| 救生烟火 |
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| 25. | ocean buoy station |
| 海洋浮标站 |
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| 26. | floating buoy (excl.lifebuoys) |
| 浮圈（不包括救生圈） |
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| 27. | drifting buoy report |
| 漂流浮标站的报告 |
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| 28. | navigational light buoy |
| 有灯航泡 |
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| 29. | large navigation buoy |
| 大型导航浮筒 |
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| 30. | lateral flow buoy |
| 横流浮筒 |
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