A wall outlet or car adapter is a much better bet.
墙插或车载充电器显然要好用得多。
Conveniently, the AC adapter can be used with either a wall outlet or a USB port.
电源适配器不仅用于墙上交流电，还可以用US B口，十分方便。
A small power-supply brick with integral male plug, designed to plug directly into a wall outlet;
一个小供电砖积分男插头，旨在堵塞直接到墙壁电源插座；
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