trackball

常見例句

• A trackball is essentially an upside-down mouse.
  軌跡球鼠標實際就是倒置的普通鼠標。
• Instead, it is controlled with a trackball.
  相反,它由追蹤球控制。
• User can type on using a mouse or trackball.
  用者可使用滑鼠或軌跡球作輸入。
• Carefully set your trackball assembly aside.
  小心地把軌跡球架子放在臺上。
• A mouse takes much more room than a trackball.
  鼠標要比軌跡球占地方的多。
• A mouse or trackball is optional, but extremely useful.
  可以選用鼠標或者軌跡球,但都對操作非常有用。
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