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
Mom is now on television
妈妈现在出现在电视上
Self-confidence is the first requisite to human greatness.
人类的伟大，首要的是要有自信。
Is this it?
这把是吗？