over your head
超出某人的理解范围
口语·形容难以理解
英文释义
to not understand something, usually because it is too complex or difficult
例句
The lecture on quantum physics went right over my head; I didn't get a word.
典故来源
源自物理空间比喻，东西在头顶上方难以触及，引申为知识或概念超出理解能力。