roll·er·ball
noun/ˈrəʊləbɔːl/
/ˈrəʊlərbɔːl/
- a type of ballpoint pen
宝珠笔;签字笔 - (also trackball, tracker ball)(computing) a device containing a ball that is used instead of a mouse to move the cursor around the screen
宝珠笔;签字笔
单词 | rollerball |
释义 | roll·er·ballnoun/ˈrəʊləbɔːl/ /ˈrəʊlərbɔːl/
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