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track ball是什么意思，track ball的翻译，track ball音标、读音、用法和例句_歐米惠必应词典
歐米惠必应词典

track ball

T 开头单词

同根派生

     

英汉例句

  • Input devices include keyboards and pointing devices such as mouse,joystick,track ball, or light pen.
    輸入設備包括鍵磐和點擊設備如鼠標，操縱杆，跟蹤球或光筆。