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| hydrosphere | |||
| sea slick | |||
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海面层 : 17 phrases in 7 subjects |
| Air defense | 1 |
| Earth sciences | 4 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Geology | 1 |
| Oceanography & oceanology | 1 |
| Oil / petroleum | 1 |
| Technology | 8 |
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