1.   I breathed in the pure mountain air.

2.   I could feel the effects of the thin mountain air.

3.   It felt good to get away from the city and breathe in some pure mountain air.

4.   She breathed in the cool mountain air.

5.   The fresh mountain air soon made Jennifer feel strong again.

6.   The thin mountain air made Trautmann feel dizzy.

7.   Breathe in clear tonic mountain air.

8.   An Army Reserve Chinook helicopter, the only one capable of flying in the thin mountain air, took five climbing park rangers to the summit Tuesday afternoon.

9.   And then he looses a shriek of glee into the thin mountain air.

10.   Armed guards in helmets and flak vests, stamping their feet in the frigid mountain air, inspect military ID cards at internal checkpoints throughout the base.