Ppa
abbr. 苯丙醇胺（phenyl-propanolamine）；并行处理自动机（Parallel Processing Automata）；实验性反应堆（Preliminary Pile Assembly）
🗣️ 情景例句
She's winning!
她赢了！
Burn not your house to rid it of the mouse.
投鼠忌器。
We need to make some changes in this contract.
这份契约有几个地方需要修改。