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| 单位卡片; 单位票卡 | |||
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| 目录卡 | |||
| 单位票卡 | |||
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unit cards : 22 phrases in 8 subjects |
| Aviation | 3 |
| Business | 2 |
| Computers | 1 |
| Economy | 1 |
| Electronics | 5 |
| Management | 2 |
| Mathematics | 3 |
| Technology | 5 |
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