| 释义 |
trackballs
释义
轨迹球
追踪球（trackball 的复数）
例句
1·This is excellent for devices that don't have hardware trackpads or trackballs .
这对于那些没有触摸板或者轨迹球等硬件的设备来说，简直棒级了。
2·Pointing devices include mice, trackballs , joysticks, light pens, digitizing tablets, and so on.
指示装置包括鼠标、跟踪球、操纵杆、光笔、数字化书写板等等。
3·Some types include digitizing tables, joysticks, trackballs , the mouse, touch panels, and light pens.
如下各种类型的设备：数字化仪、操纵杆、跟踪球、鼠标器、触板、光笔等。
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