Sppa
abbr. single-pumped parametric amplifier 單頻抽運參量放大器; Society for the Preservation of Poultry Antiquities 家禽古跡保護協會
??? 情景例句
Don't put all your eggs in on basket.
不要孤注一擲。
Cartons are seaworthy.
紙箱適合海運。
I looked out of the window.It was dark outside.
我望望窗外，外面一片昏暗。