trackball

 
['tr?kb??l]     ['tr?kb??l]    
  • n. 〈計算機〉(用來控制光標的)追蹤球
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trackball的英文翻譯是什么意思,詞典釋義與在線翻譯:

英英釋義

Noun:
  1. an electronic device consisting of a rotatable ball in a housing; used to position the cursor and move images on a computer screen;

    "a trackball is essentially an upside-down mouse"

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