prerequisite
🇺🇸
/ˌpriːˈrekwəzɪt/
🇬🇧
/ˌpriːˈrekwəzɪt/
required before something else can happen
Having prerequisite skills is necessary before taking the advanced course.
在参加高级课程之前,具备先决技能是必要的。
something that must be done or learned first
Completing the beginner course is a prerequisite for the advanced class.
完成初级课程是参加高级课程的前提条件。