Corequisite
n. (规定须与其他课程同时修习的)并修课程
🗣️ 情景例句
Loosen up! it's not worth getting upset about.
放松点儿！ 不值得为这件事苦恼。
To swim
游泳
But of course, he can learn by himself. He has a book and a dictionary.
但当然，他也可以自学。他有书和词典。