trackball

常见例句

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台上。
A mouse takes much more room than a trackball.
鼠標要比軌跡球佔地方的多。
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。