Cbb
abbr. 电子布告栏（Bulletin Board System）
🗣️ 情景例句
But personally I believe a business letter should end with Very truly yours, not Sincerely.
还行，乔治。但是我个人相信一封商业信函应该以“敬上”结尾，而不是“谨启”。
Please come here.
请来这里。
He is just a child.
他只是个孩子。