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| 1. | It was a double-barrel shotgun with a shining blue body and a chilling black muzzle. |
| 它是双筒枪管，枪身瓦蓝铮亮，枪口黑黝黝的，有一股逼人的寒气。 |
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| 2. | double-barrel separator |
| 双筒分离器 |
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| 3. | double barrel shotgu |
| 双筒鸟枪 |
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| 4. | core barrel of double tubeswivel type |
| 双层取心筒 |
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| 5. | double barrel electric hoist |
| 双筒电动卷扬机 |
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| 6. | double core barrel drill |
| 双筒取心钻具 |
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| 7. | double barrel midship pump |
| 双筒船中部抽水泵 |
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| 8. | double tube core barrel |
| 复式岩心管 |
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| 9. | a double barrel(l)ed gun |
| 双眼[双筒]枪 |
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| 10. | "the ubiquitous "dagu,"or "great drum", a barrel-shaped double-headed instrument, and the "bang-gu", |
| 还有无所不在的"大鼓"，这是一种桶状、两头均有鼓面的乐器;此外还有"板鼓"，这是戏曲用的鼓．只有一端蒙有鼓面．鼓面小，能产生共鸣发出一种尖"涩"的声音。 |
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