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14. nearly all traffic is now digital, and an increasing proportion of voice is transmitted via internet protocol packet switching, so that the vast majority of transmissions worldwide are in digital format, indistinguishable between voice and data.
14. 如今几乎所有的传输都是数字的传输,语音通过互联网协议分组交换传输的比例越来越高,因此全世界大部分传输都是以数字格式进行的,无法区分语音传输还是数据传输。