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
Who?
谁呀？
Many new ideas are discovered during college years.
大部分崭新的观念都产生于大学时代。
No, they aren't. They're their books.
不，不是我的。这些是他们的书。