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| 中央系统 | |||
| centre system: 25 phrases in 12 subjects |
| Automobiles | 3 |
| Aviation | 2 |
| Chemistry | 1 |
| Earth sciences | 1 |
| General | 1 |
| Navigation | 1 |
| Oil / petroleum | 1 |
| Physics | 1 |
| Space | 2 |
| Technology | 9 |
| United Kingdom | 1 |
| United Nations | 2 |
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