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41. | aeronautical chart |
| 航行地图 |
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42. | navigational warning area |
| 航行警告海区无线电航行警告海区 |
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43. | A journey through outer space. |
| 航空,航行通过外层太空的航行 |
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44. | a maiden voyage |
| 首次航行 |
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45. | International Union for Inland Navigation |
| 国际内河航行联盟(内河航行联盟) |
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46. | sailing list;sailing schedule |
| 航行时间表 |
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47. | fixed sailings |
| 定期航行 |
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48. | an outward voyage |
| 海外航行 |
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49. | return from a voyage |
| 航行归来 |
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50. | navigate the sea |
| 航行在海上 |
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