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
but ... but I've been noticing
但……但我注意到
Let me see your passport, please.
请让我看看你的护照。
I live in a tall building in the middle of the city.What about you?
我住在这个城市中心的一幢高楼里。你呢？