Ffb
abbr. fat-free body 脱脂体，无脂肪体
🗣️ 情景例句
I'd like to give her a nice going-away present.
我很想送给她一件好的离别礼物。
How! A fight!
哗，打架啦！
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%。