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代替 技 术 : 13 phrases in 10 subjects |
| Aviation | 1 |
| Bioenergy | 1 |
| Business | 2 |
| Chemistry | 1 |
| Earth sciences | 1 |
| Economy | 3 |
| Electronics | 1 |
| Environment | 1 |
| International trade | 1 |
| Technology | 1 |
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