Tracing a circle on your wrist tells the device to project a digital clock on your arm - the world's lightest wristwatch, a fan joked.

它在你的腕关节处绘制一个圆圈，并且要求装置在你的胳膊上投射出一个数字钟——开玩笑的说，这是全世界最轻的手表了！

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To Notify Clients About Real-World Events The user pressed a key; the clock struck midnight; the fan failed and the CPU is on fire.

通知客户机实际的事件：用户按下某个按键；午夜时钟敲响；风扇停止工作造成 CPU 烧毁；

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Find something that makes a very quiet, steady sound. A small fan on a low setting or a real, non-electric, ticking watch or clock are ideal.

找一些安静、稳定的东西，一台低音的小风扇，一只电子手表或钟是一个很好的选择。

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"Brian Cobby, the third voice of the Speaking Clock, used to receive fan mail from people who used the service late at night just to hear his calm voice, " says McEvoy.

BBC: Speaking Clock: Why are people still dialling for the time?