That electrical charge we then pass through to a battery which you'll find in the heel of the boot for storage of the electrical power for later use to charge your mobile phone.
这些电荷会传至鞋跟处的一个蓄电电池上，在需要时可为手机充电。
That electrical charge we then pass through to a battery which you'll find in the heel of the boot for storage of the electrical power for later use to charge your mobile phone.
这些电荷会传至鞋跟处的一个蓄电电池上，在需要时可为手机充电。
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