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| pyrotechnic light; pyrotechnic signal; self-igniting light | |||
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烟火信号 : 21 phrases in 8 subjects |
| Air defense | 1 |
| Aviation | 1 |
| General | 2 |
| Mountaineering | 2 |
| Nautical | 3 |
| Oil / petroleum | 2 |
| Space | 2 |
| Technology | 8 |
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