Trackballs
(trackball 的复数) n. 追踪球；轨迹球
🗣️ 情景例句
No. I'm sorry, but we can't send out our tow truck to get you.
不能，真对不起，我们不能派拖车来。
She wants me to come as often as possible.
她希望我尽可能常来。
The change between hot and cold temperatures makes the blood move around the shoulder and the damaged parts begin to repair themselves.
冷热交替使肩膀周围的血液循环，受伤的部位开始自己修复。