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流动场 : 25 phrases in 11 subjects |
| Aviation | 1 |
| Business | 3 |
| Chemistry | 1 |
| Electronics | 1 |
| Finances | 4 |
| International Monetary Fund | 1 |
| International trade | 1 |
| Polymers | 2 |
| Space | 2 |
| Technology | 8 |
| Wind Energy | 1 |
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