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
which we made clear at the beginning of the negotiation.
关于这一点，我们早在开始谈判时期就讲明了。
Virtue is a jewel of great price.
美德是无价之宝。
Don't you remember?I had to water it every day.
你记得了吗？我不得不每天浇水。