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信息速度 : 16 phrases in 11 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Aviation | 1 |
| Business | 1 |
| Communications | 1 |
| Computers | 1 |
| Construction | 1 |
| Electronics | 2 |
| Management | 1 |
| Space | 3 |
| Technology | 3 |
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