trackball

常见例句

A trackball is essentially an upside-down mouse.
轨迹球鼠标实际就是倒置的普通鼠标。
Instead, it is controlled with a trackball.
相反,它由追踪球控制。
User can type on using a mouse or trackball.
用者可使用滑鼠或轨迹球作输入。
Carefully set your trackball assembly aside.
小心地把轨迹球架子放在台上。
A mouse takes much more room than a trackball.
鼠标要比轨迹球占地方的多。
A mouse or trackball is optional, but extremely useful.
可以选用鼠标或者轨迹球,但都对操作非常有用。