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31. | an outward voyage |
| 海外航行 |
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32. | A journey through outer space. |
| 航空,航行通过外层太空的航行 |
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33. | International Union for Inland Navigation |
| 国际内河航行联盟(内河航行联盟) |
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34. | navigate the sea |
| 航行在海上 |
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35. | fixed sailings |
| 定期航行 |
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36. | aeronautical chart |
| 航行地图 |
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37. | return from a voyage |
| 航行归来 |
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38. | a maiden voyage |
| 首次航行 |
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39. | sailing list;sailing schedule |
| 航行时间表 |
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40. | interplanetary and interstellar navigation |
| 星际航行 |
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