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single bounce |
单反射 : 44 phrases in 13 subjects |
Air defense | 1 |
Artificial intelligence | 1 |
Earth sciences | 2 |
Electronics | 5 |
General | 1 |
Geology | 1 |
Information technology | 1 |
Metallurgy | 3 |
Oil / petroleum | 5 |
Space | 2 |
Sports | 3 |
Technology | 17 |
Telecommunications | 2 |