这一切都不需要电线（不过，Windows电脑用户必须先下载和安装一个在后台运行的Mobile Me控制面板，然后再进行同步）。
None of this required cables (though, for Windows computers, you must first download and install a Mobile Me control panel that runs in the background).
由此可见，下一代电线会比现在多传输四分之一的电流，而且不需要添加任何大容量的绝缘材料。
That means the next generation of power lines could carry up to a quarter more current without adding any more bulky insulation.
你的卧室最不需要的东西就是磨损的电线或者手机充电器。
The last thing you need in your bedroom is fraying cables or phone chargers.
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