1、the rarefied air of the mountain tops
2、the rarefied air of the Andes
3、It is important for the state's future administrators to get out of the rarefied air of the capital.
4、Lift is a problem in the rarefied air of the stratosphere, and it seems such a design can help.
5、All those lives maintained in the rarefied air of the absurd could not persevere without some profound and constant thought to infuse its strength into them.
