Trackballs
(trackball 的复数) n. 追踪球；轨迹球
🗣️ 情景例句
If you don't mind my asking, where did you come from?
你从哪儿来？要是你不介意我这么问的话。
Do you live up the street?
你在街头居住吗？
Dan was most surprised when he heard the news.
丹听到这个消息后，惊奇万分，