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
You seem to have some reservations.
看起来你还有些犹豫。
My steak is so tender that it melts in my mouth.
我的牛排软得像要在我嘴中融化一样。
Good evening! Mr Green, where are you from?
晚上好，格林先生，你是哪里来的？