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marked |
标 示的 : 41 phrases in 14 subjects |
Air defense | 7 |
Automobiles | 3 |
Aviation | 4 |
Compressors | 1 |
Construction | 1 |
Earth sciences | 1 |
General | 6 |
Information technology | 1 |
Pigeon racing | 1 |
Project management | 2 |
Space | 1 |
Sports | 1 |
Stationery | 1 |
Technology | 11 |