喷枪在垂直面自动移动的装置，一个回动的或往复式的提供移动的装置。
Device used to move automatic guns in a vertical plane. A reversing or reciprocating drive system provides motion.
这篇文章暗示我们手臂肌肉骨骼的回动的动作需要利用不同的机肉来完成。
The passage implies that reversing the muscle-bone movement used to bend an arm requires the use of different muscles.
法院听取了有关撤回动议的论点，并保留了其裁决。
The Court heard argument on the motion for recusation and reserved their decision.
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