All financial trades are electronically recorded; it would be simple for them to be monitored by tax authorities.
税务机关的监管工作并不繁杂，因为所有的金融交易都采用的是电子记录。
An electronically recorded graphic representation of a person's voice, in which the configuration for any given utterance is uniquely characteristic of the individual speaker.
声波纹一种电子记录下来的图纹，表现出一个人的声音，图中每一种发音的轮廓都是这个说话者的单独特征。
Researchers at Canada's McMaster University asked people to listen to recorded clips of a male and female voice, which were electronically altered to become higher or lower pitched.
加拿大麦克马斯特大学的研究人员让人们听了一组录好的男性和女性声音的片段，这些声音的音调高低可以通过电子手段来调整。
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