trackball
n. 〈计算机〉（用来控制光标的）追踪球
英英释义
Noun
- an electronic device consisting of a rotatable ball in a housing; used to position the cursor and move images on a computer screen;
"a trackball is essentially an upside-down mouse"
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。