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
Have yo ever been to Teem Plaza?
你到过天河城吗？
Could all of you take your seats? We need to continue our meeting.
请你们各位就坐好吗？我们要继续开会了。
The smoke from the fire rose and found its way outside and the light danced over the roof of the cave.
缕缕青烟从火中升起，飘出洞外，火光在洞顶上闪耀。