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| 海底 | |||
| 海床 | |||
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seabed : 85 phrases in 16 subjects |
| China | 1 |
| Drilling | 1 |
| Earth sciences | 4 |
| Ecology | 2 |
| Engineering geology | 3 |
| Fishery fishing industry | 3 |
| International trade | 3 |
| Mining | 2 |
| Name of organization | 1 |
| Nautical | 3 |
| Navigation | 6 |
| Oceanography & oceanology | 4 |
| Oil / petroleum | 8 |
| Space | 2 |
| Technology | 41 |
| United Nations | 1 |
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