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
Before we go to the gallery,
在我们去画廊之前
That's monkey business!
胡闹！
We had to climb over some rocks and it started to rain.
我们不得不爬过一些岩石，这时开始下起雨。