Pca
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
Stone is still in the hospital, but he's making good progress.
世通还在医院，但他的身体康复得很快。
Aaugh, help.
哇，救人啊。
Sorry! she said to the shopkeeper. I've forgotten my money!
“对不起！”她对售货员说，“我忘记带钱了！”