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双刀 n 掷开关 : 17 phrases in 10 subjects |
| Earth sciences | 1 |
| Electronics | 2 |
| General | 2 |
| Geophysics | 2 |
| Hydroelectric power stations | 1 |
| Information technology | 4 |
| Navigation | 1 |
| Rail transport | 1 |
| Space | 2 |
| Technology | 1 |
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