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更新系统 : 30 phrases in 11 subjects |
| Agriculture | 2 |
| Automobiles | 1 |
| Aviation | 7 |
| Earth sciences | 2 |
| Electronics | 9 |
| Genetics | 1 |
| Geology | 1 |
| Information technology | 2 |
| Librarianship | 1 |
| Space | 2 |
| Technology | 2 |
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