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低效率的 : 14 phrases in 10 subjects |
| Automobiles | 1 |
| Business | 2 |
| Computer numerical control | 1 |
| Economy | 1 |
| Explosives and Explosive Ordnance Disposal | 2 |
| General | 3 |
| Refrigeration | 1 |
| Securities | 1 |
| Technology | 1 |
| United Nations | 1 |
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