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
Sports help to develop healthy bodies.
运动可以锻炼健康的身体。
I don't think so.
我想不是。
That's very nice of you.
你真好。