常見例句A trackball is essentially an upside-down mouse. 軌跡球鼠標(biāo)實際就是倒置的普通鼠標(biāo)。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(biāo)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(biāo)或者軌跡球,但都對操作非常有用。 返回 trackball