山頂上空氣稀薄。

The air is thin at the summit.

Source: Tatoeba

Sentence Composition

1 山頂 shāndǐng hilltop
2 上空 shàngkōng
  1. the skies above a certain place; (aviation) airspace
  2. (Tw) topless
=3 氣 qì
  1. gas; air
  2. smell
  3. weather
  4. to make angry; to annoy; to get angry
  5. vital energy; qi
=3 氣 xì
  1. (obsolete on its own in Standard Chinese) Original form of 餼／饩 (xì, “to give food as a gift”).
  2. Original form of 餼／饩 (xì, “to give food as a gift”).
4 稀薄 xībó
  1. thin
  2. rarefied