课太设法的英文

hard, challenging, painstaking都可以。

It is impossible to persuade these students to take a course in Fast Reading

Course is hard to really creepy

各种课all kind of courses (classes)

我的理解是：Curriculum Design 是指多种课程的设计,类似于课程表，我认为可以和 Lesson plan相通Course Design 可以指针对一门专业学科的课程设制其实一般情况下两者意思大致一样的。