Corequisite
n. (规定须与其他课程同时修习的)并修课程
🗣️ 情景例句
I don't believe it!
我简直难以相信！
A crow is never the whiter for washing herself often.
乌鸦不管怎样经常洗澡，也不会变白。
During the summer, I noticed tat the leaves of the tree were beginning to wither.
到了夏天，我发现树叶开始枯萎，