"Three times a week" in Engpsh.
It comes from the combination of the number "three" and the time unit "times", which indicates frequency, and the noun "week", which refers to a unit of seven days.
Example sentences in Engpsh with Chinese translation:
I go to the gym three times a week to keep fit. (我每周去健身房三次保持健康。)
She studies Engpsh three times a week to improve her language skills. (她每周学习英语三次以提高她的语言技能。)
They meet with their team three times a week to discuss project progress. (他们每周和他们的团队见面三次，讨论项目进展。)