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
OK, Betty, Tim, and Frank.
好, Betty ,Tim ,Frank。
Do I have to make a reconfirmation?
我还要再确认吗?
My name is Liu Ying. I'm in Row 1. I'm Number 2.
我叫刘颖。我在第一排。我是2号。
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