Sppa
abbr. single-pumped parametric amplifier 单频抽运参量放大器; Society for the Preservation of Poultry Antiquities 家禽古迹保护协会
🗣️ 情景例句
His personality left a deep impression on us.
他的人品给我留下了深刻的印象。
I got home, feeling very tired.
我到家时都累死了[分词作状语]
Right. They're running and jumping all the time.
对，他们老是跑啊跳的。