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冲垫 : 44 phrases in 9 subjects |
| Automated equipment | 1 |
| Drilling | 1 |
| Electronics | 5 |
| General | 16 |
| Mechanic engineering | 1 |
| Nautical | 1 |
| Oil processing plants | 1 |
| Skydiving | 2 |
| Technology | 16 |
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