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| constant time range | |||
| 周 期 段: 22 phrases in 10 subjects |
| Athletics | 1 |
| Aviation | 1 |
| Business | 5 |
| Ecology | 2 |
| Electronics | 3 |
| International trade | 1 |
| Project management | 3 |
| Technology | 3 |
| Telecommunications | 1 |
| Textile industry | 2 |
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