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
Okay. Thank you.
好的，谢谢。
As to you, I despise you.
至于你，我看不起你。
There's another tiger in the forest.
这林子里还有另外一只老虎。