Dr Frank Drake said the phasing out of analogue transmissions from television, radio and radar was making our planet electronically invisible from outer space.
Frank Drake博士声称由于电视、无线电和雷达越来越少采用模拟信号进行传输，这一过程使地球在地外文明的电子设备上逐渐隐形。
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It shows that it is not enough to embrace technological change. Businesses must also work out how to build digital offerings that do not cause their analogue ones to collapse.