高原反应 Traditional 高原反應 gāo yuán fǎn yìng 🔊 altitude sickness + Keep this word Meanings gāo yuán fǎn yìng 高原反應 altitude sickness Its characters 高gāohighHSK 2原yuánformerHSK 5反fǎncontraryHSK 5应yīngto agree (to do sth)HSK 7–9