Cbb
abbr. 电子布告栏（Bulletin Board System）
🗣️ 情景例句
I need a new toothbrush. My old one's worn out.
我需要一支新牙刷。旧的用坏了。
Let me congratulate you on your success.
祝贺您的成功。
This is because the surface of the earth is not flat but round.
因为地球表面不是平的，而是圆的。