If air weren't admitted into the bell jar the electric bell in the bell jar would not ring because of a lack of a medium.

如果我们不让空气进入铃罩，铃罩中的电铃一定会因缺少介质而不响了。

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That electricity from a Leyden jar or an electric machine would cause the legs of a dead frog to move.

莱顿瓶或电器发出来的电竟使死蛙的腿动起来。

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If air weren't admitted into the bell jar, the electric bell in the bell jar would not ring because of a lack of a medium.

如果我们不让空气进入铃罩，铃罩中的电铃一定会因缺少介质而不响了。

youdao