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| prior operation | |||
| preliminary operation | |||
| preparation operation; preparatory operation | |||
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准备作业 : 11 phrases in 7 subjects |
| Business | 1 |
| Economy | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Management | 1 |
| Metallurgy | 5 |
| Space | 1 |
| United Nations | 1 |
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