When you charge the battery, ions will flow through the liquid.
当你给电池充电时，电池里的液体会发生离子运动。
W:Inside a battery are two liquid substances. Power is produced when these two react.
温迪：电池内有两种液态物质，两种物质起化学反应时，就会产生电力。
W:Inside a battery are two liquid substances. Power is produced when these two react.
温迪：电池内有两种液态物质，两种物质起化学反应时，就会产生电力。
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