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2013-05-23 12:21
求翻译：The most significant developments in both ammunition and weapons followed the refinement of gunpowder in the thirteeth century ,which enabled it to be used in time as a porpellant explosive to propel missiles and other projectiles over long distances.是什么意思？ 待解决
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The most significant developments in both ammunition and weapons followed the refinement of gunpowder in the thirteeth century ,which enabled it to be used in time as a porpellant explosive to propel missiles and other projectiles over long distances.
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