selecting operation

漢語翻譯

例句：

1. A hand-held, button-activated input device that when rolled along a flat surface directs an indicator to move correspondingly about a computer screen, allowing the operator to move the indicator freely, as to select operations or manipulate text or graphics.
   滑鼠一種手用的、用按扭控制的輸入設備，當在平台上滑動時可以相應地移動計算機螢幕上的指示箭頭，使得操作者可以隨意控制指示箭頭，由此來選擇項目、控制內容或作圖