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| 将M作价购买N (N); 用M折价换取N (N) | |||
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trade in on : 32 phrases in 10 subjects |
| China | 3 |
| Ecology | 3 |
| Economy | 2 |
| Electronics | 1 |
| International Monetary Fund | 4 |
| Law | 1 |
| Name of organization | 4 |
| Nautical | 1 |
| Securities | 2 |
| United Nations | 11 |
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