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气 封的 : 24 phrases in 10 subjects |
| Automobiles | 5 |
| Drilling | 1 |
| Electric machinery | 2 |
| Electronics | 3 |
| Explosives and Explosive Ordnance Disposal | 2 |
| General | 3 |
| Pulp and paper industry | 1 |
| Refrigeration | 1 |
| Technology | 5 |
| Telecommunications | 1 |
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