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无缺的 : 33 phrases in 13 subjects |
| Automobiles | 2 |
| Business | 3 |
| Commerce | 1 |
| Drilling | 1 |
| Economy | 3 |
| Electric machinery | 1 |
| Electronics | 2 |
| Forestry | 1 |
| General | 11 |
| Metallurgy | 2 |
| Space | 1 |
| Statistics | 1 |
| Technology | 4 |
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