a place or situation where you are separated from the problems and practical aspects of normal life and therefore do not have to worry about or understand them 象牙塔（指远离问题、脱离现实的小天地） academics living in ivory towers 生活在象牙塔中的学者
Word Originearly 20th cent.: translating French tour d'ivoire, used by the writer Sainte-Beuve.