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| Primordial system | |||
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始 生系 : 10 phrases in 8 subjects |
| Agriculture | 1 |
| Cartography | 1 |
| Earth sciences | 2 |
| Electronics | 1 |
| Fishery fishing industry | 1 |
| Nuclear physics | 1 |
| Space | 2 |
| Technology | 1 |
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