By comparing the characteristics of the natural spark with the man-made charge, Franklin was able to prove the similarity of electric matter and lightning.
通过对比自然电火花和人工电荷，富兰克林证实了带电物质和闪电之间的相似性。
By comparing the characteristic of the natural spark with the man-made charge, Franklin was able to prove the similarity of electric matter and lightning.
通过对自然电火花与人工电荷的特征进行对比，富兰克林证实了带电物质与闪电之间的相似性。
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