The course teaches you the theory but there's no substitute for practical experience.
这门课教的是理论,但没有任何东西能代替实践经验。
《牛津词典》
2
Experienceteaches us a lesson.
经验给人教训。
3
Experienceteaches us that the personal and collective process of disaster recovery, particularly through local involvement, is critical to national healing, to rebuilding and to thriving once again.