空气流通 kōng qì liú tōng

DEFINITIONS

  1. fresh air
  2. draft

CHARACTERS

空 kōng
HSK 3
empty, hollow, bare, deserted
气 qì
HSK 1
steam, vapor; KangXi radical 84
流 liú
HSK 4
flow, circulate, drift; class
通 tōng
HSK 4
pass through, common, communicate