rollerball
noun /ˈrəʊləbɔːl/
/ˈrəʊlərbɔːl/
- a type of ballpoint pen
- (also trackball, tracker ball)(computing) a device containing a ball that is used instead of a mouse to move the cursor around the screen
| 单词 | rollerball |
| 释义 | rollerballnoun /ˈrəʊləbɔːl/ /ˈrəʊlərbɔːl/
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