tracker ball
noun /ˈtrækə bɔːl/
/ˈtrækər bɔːl/
(also trackball, rollerball)
(computing)- a device containing a ball that is used instead of a mouse to move the cursor around the screen
单词 | tracker ball |
释义 | tracker ballnoun /ˈtrækə bɔːl/ /ˈtrækər bɔːl/ (also trackball, rollerball) (computing)
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