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Its very nature makes it an especially good leapfrogger: it works using radio, so there is no need to rely on physical infrastructure such as roads and phone wires;
正是它的那些特性使它成为一个很好的“跨越者”：它使用无线电工作，因此不需要依靠像道路和电话线一类的物理基础设施；
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