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
We had a great time, Mom.
我们玩得非常开心，妈妈。
Sometimes I make mistakes when I speak English.
当我说英语时，有时我犯错误。
Jim, could you help me, please?
吉姆，你能帮我吗？