rarefied /ˈrɛərɪˌfaɪd/

• 1. 

  ADJ If you talk about the rarefied atmosphere of a place or institution, you are expressing your disapproval of it, because it has a special social or academic status that makes it very different from ordinary life. 高高在上的; 过于高贵的; 脱离现实生活的 [usu ADJ n] [表不满]

  例：

  It is important for the state's future administrators to get out of the rarefied air of the capital.

  对该国未来的统治者来说，摆脱首都高高在上的氛围十分重要。

• 2. 

  ADJ Rarefied air is air that does not contain much oxygen, for example in mountain areas. (空气)稀薄的; 含氧量少的

  例：

  ...living at very high altitudes where the atmosphere is rarefied.

  ...生活在空气稀薄的高海拔地区。