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
I understand.
我了解。
Oh? Where were you?
哦，上哪儿去了？
'I might as well have them,' I said sadly.
“我还是买下的好，”我垂头丧气地说。