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
I've been doing this job for 25 years, and I tell you you're going to stuff it up doing things this way.
我干了这工作已有25年了，告诉你，你这样做事情，会把事情办糟的。
Thank you for coming to see me off.
谢谢你来为我送行。
A clear conscience laughs at false accusation.
只要问心无愧，无端的指责可以一笑置之。