Trackballs
(trackball 的复数) n. 追踪球；轨迹球
🗣️ 情景例句
I feel feverish.
我有点发烧。
I'm glad to hear you are getting married.
我很高兴听到你将结婚的消息。
Most of my friends live in the city, yet they always go into raptures at the mere mention of the country.
我的许多朋友都住在城市，但他们只要一提起乡村，马上就会变得欣喜若狂。