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测风 球 : 29 phrases in 11 subjects |
| Agriculture | 1 |
| Aviation | 2 |
| Desert science | 3 |
| Earth sciences | 2 |
| Electronics | 1 |
| French | 1 |
| General | 6 |
| Skydiving | 3 |
| Space | 3 |
| Technology | 6 |
| Wind Energy | 1 |
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