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旋 转方向: 54 phrases in 18 subjects |
Agriculture | 1 |
Air defense | 2 |
Automobiles | 10 |
Aviation | 2 |
Chemistry | 2 |
Compressors | 1 |
Computer numerical control | 2 |
Earth sciences | 1 |
Electric machinery | 3 |
Electronics | 4 |
General | 5 |
Oil / petroleum | 1 |
Plastics | 3 |
Shipbuilding | 3 |
Space | 4 |
Technology | 8 |
Tennis | 1 |
Tools | 1 |