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
Would you kindly hold these keys, please?
请帮我拿一下钥匙。
I'm sure he will be able to find the place.
我确定他会找到那地方。
I was almost there when a sarcastic voice below said,
当我几乎到了窗口，这时下面一个讽刺的声音说，