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先进国家 : 11 phrases in 9 subjects |
| Aviation | 1 |
| Business | 1 |
| Cosmetics and cosmetology | 1 |
| Desert science | 1 |
| Earth sciences | 1 |
| Economy | 3 |
| Space | 1 |
| Textile industry | 1 |
| United States | 1 |
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