Pcas
(pca 的复数) abbr. 污染控制局（Pollution Control Agency）；极地冷空气堆吸收, 极冠吸收（Polar Cap Absorption）；波特兰水泥协会（Portland Cement Association）
🗣️ 情景例句
That's it.
就这样。
I'll treat you to dinner.
我想请你吃饭。
not because he cannot afford, or shuns, their meterial comforts, but because he is afraid of them.
这并不是因为他们付不起钱，也不是为了躲避物质享受，而是因为他们害怕酒店。