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| 非对称的: 18 phrases in 9 subjects |
| Automobiles | 2 |
| Aviation | 2 |
| Business | 1 |
| Cryptography | 4 |
| General | 2 |
| Oil / petroleum | 1 |
| Polymers | 1 |
| Statistics | 1 |
| Technology | 4 |
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