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机器故障 : 25 phrases in 13 subjects |
Agriculture | 1 |
Aviation | 1 |
Business | 3 |
Commerce | 2 |
Economy | 5 |
General | 1 |
Hydroelectric power stations | 1 |
Information technology | 3 |
International trade | 1 |
Shipbuilding | 1 |
Space | 2 |
Technology | 3 |
Telecommunications | 1 |