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| sea-level altitude; altitude with respect to sea level | |||
| sea level | |||
| sea surface height | |||
| 海平面高度: 10 phrases in 6 subjects |
| Aviation | 4 |
| Earth sciences | 2 |
| Ecology | 1 |
| Engineering geology | 1 |
| Technology | 1 |
| Water resources | 1 |
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