| 释义 |
DEFINITIVE EXAMPLES 权威例句〔pointing device〕An input device, such as a mouse, joystick, or trackball, with which one can move or manipulate a cursor or pointer on a GUI.指向装置：为输入装置，像是鼠标、操纵杆或是轨迹球，用来移动或操作图形接口上的光标或指示物美国传统〔trackball〕A ball mounted in a stationary housing and rotated to control a pointer on a computer screen.轨迹球，跟踪球：嵌入固定框架的球，旋转以控制计算机屏幕上的光标美国传统 |