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| line of flight; trajectory | |||
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箭道 : 37 phrases in 9 subjects |
| Air defense | 3 |
| Archery | 2 |
| Astronautics | 1 |
| Aviation | 3 |
| Electronics | 1 |
| Remote sensing | 2 |
| Space | 23 |
| United Kingdom | 1 |
| United States | 1 |
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