B.c.e.
abbr. 化学工程学士（Bachelor of Chemical Engineering）；公元前（Before the Common Era）
🗣️ 情景例句
The subject is unfamiliar to me.
那个问题我不熟悉。
But Li Ming has promised to come home for the summer vacations.
但是李明已经答应暑假回家。
Li Lei went into the school and found Miss Zhao in the school library.
李垒走进学校，在学校图书馆里找到赵小姐。