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| 脱机系统; 脱线系统 | |||
| 离线系统 | |||
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off-line system : 11 phrases in 7 subjects |
| Computers | 1 |
| Earth sciences | 1 |
| Economy | 1 |
| Electronics | 4 |
| Information technology | 2 |
| Space | 1 |
| Telecommunications | 1 |
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