Data bits flow from cell towers through fiber and copper lines to a switching station.

数据从信号接收塔经由光纤和铜线流至交换站。

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Water may flow easily in through the membrane, but all of the stuff, all the salt and everything else that's inside the cell generally won't.

水可以自由地通过膜，但所有的物质，所有的盐和细胞中，所有其他的物质通常不会。

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For the cell shown, an electrical current would flow through the metallic conductor and the electrolyte.

对图示电池，有电流通过金属导线和电解质流动。

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