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
I've been looking forward to meeting you.
我一直盼望能有幸认识你。
I'm looking for a half-time job.
我在找半工半读的工作。
it requires 97 per cent less energy to travel the quarter of a million miles from the Moon to Earth-orbit than the 200 mile-journey from Earth's surface into orbit!
因此，从月球到地球的25万英里所消耗的能量要比从地球表面进入地球轨道的200英里所耗能量少97%。