大家都搜：
n.轨迹球；追踪球
1、retracted eardrums───回缩耳膜
2、contraction games───收缩游戏
3、contractility define───收缩性定义
4、lawless soundtrack───无法无天的配乐
5、disaffirmation contract───不确认合同
6、tetracl n───四环素n
7、fenny tract───沼泽区
8、traction aid crossword───牵引辅助纵横字谜
9、tracking time───[医]跟踪时间
10、malt extract───麦精，麦芽膏；n.麦芽膏，麦精
1、Check the trackball and use a clean, soft cloth to wipe off the surface dust.───检查轨迹球并用干净、柔软的布擦去表面的灰尘。
2、The trackball, which feels similar to that of the G1 and Blackberry phones, provides another quick way to get around the Web OS interface.───轨迹球的使用感觉和G1及黑莓手机差不多，提供了另外一种快速Cao作方式。
3、Adjust how much your pointer accelerates as you moveyourmouse or trackball faster.───调整指针在您加快移动鼠标或滚球时加速多少。
4、A trackball has the ball on top and you move it with your finger.───阿轨迹球有球在上面，你用手指移动它。
5、In 2006, the scroll wheel was replaced with a trackball on the front of the device .───2006年滚轮被一个置于手机正面的轨迹球取代。
6、notification trackball is a nice idea, but I don't think it really adds much to my experience.───通知功能的轨迹球是个好点子，但它没有给我的体验带来多少帮助。
7、After backing out of the menu, an encryption key can be selected by moving the trackball and typing characters on the keyboard.───退回菜单后，通过移动轨迹球或输入键盘上的字母选择一个密钥。
8、They use a trackball to move the cursor and scroll the screen, but it is more like cursor-key functionality rather than a mouse pointer.───它们使用轨迹球移动指针和滚动屏幕，但是这更像是指针-键功能而不是鼠标指针。