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| air draught; air ventilation | |||
| air draft | |||
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空气通风 : 24 phrases in 12 subjects |
| Animal husbandry | 1 |
| Automobiles | 2 |
| Aviation | 3 |
| Business | 1 |
| Chemistry | 1 |
| Consulting | 1 |
| Electric machinery | 1 |
| Electronics | 2 |
| Oil processing plants | 1 |
| Plastics | 1 |
| Refrigeration | 2 |
| Technology | 8 |
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