B-c
abbr. 公元前（Before Christ）
🗣️ 情景例句
I find myself in an embarrassing situation.
我现在有一件很糗的事。
Know something like the palm of one's hand.
熟知其事，了如指掌。
Here is a copy of itinerary we have worked out for you and your friends.Would you please have a look at it?
这是我们为你和你的朋友拟定的活动日程安排。请过目一下，好吗？