快速动眼期 kuài sù dòng yǎn qī

DEFINITIONS

  1. REM sleep

CHARACTERS

快 kuài
HSK 2
rapid, quick, speedy, fast; soon
速 sù
HSK 4
quick, prompt, speedy
动 dòng
HSK 2
move, happen; movement, action
眼 yǎn
HSK 2
eye; eyelet, hole, opening
期 qī
HSK 1
period of time; date; time limit