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闲 空 时间 : 31 phrases in 14 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Business | 5 |
| Computers | 1 |
| Construction | 1 |
| Finances | 1 |
| General | 4 |
| Information technology | 1 |
| Management | 1 |
| Metallurgy | 1 |
| Space | 3 |
| Technology | 8 |
| Telecommunications | 2 |
| Textile industry | 1 |
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