●【翻译】初级,中级,中高级,高级 (表示课程的难度的说法)

初级：beginner's/elementary/ level （新手级novice level）
中级：intermediate level
中高级：medium－high level
高级：advanced level

elementary/primary
intermediate/middle
middle-high level
high level

beginner
median
challenged
advanced

senior
normal
junior
advanced