Caca
abbr. 中国抗癌协会；[英]水泥和混凝土协会（Cement and Concrete Association）
🗣️ 情景例句
We are.
我们是。
He's very fond of playing tennis.
他非常喜欢打网球。
She came into my room yesterday.
昨天她到我房里来了。