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
Kids today have too much freedom, it's not like the old days.
现在的小孩太自由了，不像以前。
I will come back with him if he asks me.
我会和他走回来，假如他要求我的话。
Was there a message?
留话了吗？