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
You lost the election,
尽管你输了，
Every advantage has its disadvantage.
有利必有弊。
You look guilty.
你看上去心虚。