然而，和别的位置应用不同的是双重回音并不强迫你去持续的广播你的位置；取而代之，这款应用采取了相反的方式——你不告诉别人你的位置，你去询问别人的位置。
Unlike other location-based application, echoecho doesn't force you to constantly broadcast your own location. Instead, the application takes the opposite route.
地面数字电视广播是应用最广也是最复杂的数字电视节目传输方式。
Terrestrial digital TV broadcasting is the most widely and most complex digital television transmission.
地面数字电视广播是应用最广也是最复杂的数字电视节目传输方式。
Terrestrial digital TV broadcasting is the most widely and most complex digital television transmission.
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