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| twenty-four-second period | |||
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秒周期 : 11 phrases in 9 subjects |
| Agriculture | 1 |
| Automobiles | 1 |
| Earth sciences | 2 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Geophysics | 1 |
| Information technology | 1 |
| Multimedia | 1 |
| Technology | 2 |
| Telecommunications | 1 |
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