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| covariant | |||
| tautomeric | |||
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互变的 : 18 phrases in 9 subjects |
| Agriculture | 4 |
| Aviation | 1 |
| Business | 1 |
| Economy | 1 |
| Engineering geology | 1 |
| Finances | 1 |
| General | 2 |
| Technology | 6 |
| United Nations | 1 |
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