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管 阻塞 : 43 phrases in 14 subjects |
| Air defense | 2 |
| Animal husbandry | 1 |
| Automobiles | 2 |
| Electronics | 2 |
| General | 4 |
| Genetics | 1 |
| Nursing | 5 |
| Oil / petroleum | 1 |
| Otorhinolaryngology | 8 |
| Radio | 3 |
| Skydiving | 1 |
| Space | 5 |
| Surgery | 1 |
| Technology | 7 |
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