ivory tower
noun
- a state of privileged seclusion or separation from the facts and practicalities of the real world象牙塔（脱离现实世界的优越的隔离状态）：
the ivory tower of academia.
学术界的象牙塔。
词源
early 20th cent.: translating French tour d'ivoire, used by the writer Sainte-Beuve.