B-c
abbr. 公元前（Before Christ）
🗣️ 情景例句
Well, I guess we all have to take our mind off work once in a while.
对，我们都应该忙里偷闲。
To examine the problem
检讨问题
I'm talking. You are not talking. You're listening to me .
我在说话。你没在说话。你在听我说话。