Trackballs
(trackball 的复数) n. 追踪球；轨迹球
🗣️ 情景例句
Take it easy, sir. I'll need your name, in full, and what's happened.
别着急，给我你的全名和事情的情况。
He must have been an outstanding student.
他一定是个优秀学生。
I decline!
我拒绝！