Electricity flows through a wire just as water flows through a pipe.
电流通过导线，正像水流过管子一样。
Electricity flows through a wire just as water flows through a pipe.
电通过导线，就像水流过管子一样。
You should never join an electric wire to a water pipe.
你千万不可把电线连接在水管上。
You should never join an electric wire to a water pipe.
你千万不可把电线连接在水管上。
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