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A mouse is a pointing device designed to be gripped by one hand.

鼠标是为一只手抓握而设计的指示设备。

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You can only assign the "Right-click" command to one pointing device button.

只能将“右键单击”命令分配给一个指针设备按钮。

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Now, however, Apple is pushing a new kind of pointing device.

FORBES: Killing The Mouse, Softly

Another alternative to the mouse as a pointing device is to use a gaze-tracking camera, which works out where you are looking and moves an on-screen pointer accordingly.

ECONOMIST: Computer interfaces

The first was the graphical user interface, using a mouse as a pointing device, which Jobs adapted (some might say stole) from Xerox PARC and SRI to make the Macintosh.

FORBES: Apple's Siri: 'The Culmination Of Steve Jobs' Legacy'