power adapter

基本解释

Could a new kind of battery be recharged without a special power adapter, or even without a wall socket?
新款电池可以不通过特殊的电源适配器、甚至不用墙上的插座就可以充电么？
The power adapter has been shrunk down to a one-inch cube, so it doesn’t hog an extra spot on your power strip.
电源适配器也缩小成了一个一英寸见方的小玩意儿，这样就不会占据你插线板上多余的插孔了。
Most of the time I keep the longer cord attached to my power adapter, but sometimes I like (or need) to have it set up in the more compact form.
平时一般都将电源线插在电源适配器，但是有时候我需要多腾出来一点空间。

The gadget is AAA battery powered and there's no power adapter or in-built power pack.
ENGADGET
The router can be powered through a USB connection or external power adapter, both included with the device.
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