通过先前面板中的History按钮可以显示关于组的指示器如何随着时间而变化的历史数据。

You can use the History button in the previous panel to display historical data about how the indicators of a group evolve over time. Historical data is plotted on line charts showing.

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一个按钮控制大部分功能，包括接听电话和重拨，顶部边缘处有一个更小的按钮，用来控制音量和开启、关闭状态指示器。

One button handles most functions including call answer and redial, while a smaller button on the top edge controls volume and turns the status indicator on and off.

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按想要的方向移动指示器，然后按下按钮。

Move the pointer in the desired direction and press the button.

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