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
Jnice to have you with us.
很高兴你能跟我们在一起。
He who would search for pearls must dive below(or deep).
欲寻珍珠，须潜水下。
Manners are quite different from country to country.
各国的礼仪各不相同。