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极线的 : 35 phrases in 10 subjects |
| Advertising | 1 |
| Architecture | 1 |
| Aviation | 2 |
| Earth sciences | 2 |
| Electric machinery | 1 |
| Electronics | 5 |
| General | 13 |
| Mathematics | 2 |
| Space | 1 |
| Technology | 7 |
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