Abelson解释道，可以通过按屏幕上的按钮来开启这一功能，以备某个周末晚上他想让朋友们知道他在哪里。
An onscreen button would turn on the program, Mr. Abelson explained, for perhaps a few hours on a Saturday night when the person wanted his friends to know where he was.
除了点按主屏幕上的语音控制图标外，您也可以长按开始/暂停键来开启语音控制。
Instead of clicking on the Voice Control icon on your Home screen you can also access Voice Control by holding in the pause key.
我把我所有的装备插上电脑，但令人惊奇的是当我开启电脑时，屏幕上没有任何显示。
I plugged in all my stuff in the computer, but surprise when I turned it on, nothing on the screen.
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