Umd
abbr. 便携数字智能产品（Ultra Mobile Devices）；PSP专用光盘（Universal Media Disc）
🗣️ 情景例句
She is not able to take your call at the moment.
她现在没办法接你的电话。
When I came in, he was reading.
当我进来的时候，他在读书。
You did a good job.
干的好！