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。

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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。

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The ac adapter (as it's more accurately known) simply converts the ac current from a wall outlet into low-voltage, low-amperage DC current that it provides via a USB port.

AC适配器(这是交流电源更准确的说法)只是把来自墙上插口的交流电转化为低伏特、低安培的直流电源，并通过USB接口充入手机。

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The device can be plugged into a wall outlet or battery powered.

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The 20W box will play audio streamed from any AirPlay-capable device on the same WiFi network while it sits demurely on a wall outlet.

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Convenient Pass-Through Mode - Both Joey and the user's device can be charged from a single wall outlet cable.

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