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试验 分类 : 18 phrases in 10 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Business | 2 |
| Desert science | 1 |
| Earth sciences | 1 |
| Ecology | 1 |
| Electronics | 3 |
| Engineering geology | 3 |
| Space | 1 |
| Technology | 4 |
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