英语词汇“trackball”是什么意思，“trackball”的读音、用法及例句翻译-烛光网

词汇	trackball
释义	track·ball AHD[trăkʹbôl'] D.J.[ˈtrækˌbɔːl]K.K.[ˈtrækˌbɔl]n.（名词） 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
随便看	heap heap heaped heaping heaps hear hear heard Heard Island heared hearing hearing hearing hearing aid hearing dog hearing ear dog hearing-impaired hearings hearken hearkened hearkening hearkens hearn Hearn hears

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