To interact with a computer solely by voice is much more difficult work t than using various hardware input devices and monitoring the computer state with visual feedback.

只通过语音与计算机交互相比起使用各种硬件输入设备和利用可视反馈监视计算机状态来说，是一项更为艰难的工作。

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Monitoring Internet traffic is a tedious and time-consuming affair that will only become more difficult as the volume increases.

ECONOMIST: China and the Internet