fēi​sù HSK7

rapidly

飞速 (飛速) fēi​sù
rapidly adverb
moving, developing, or progressing at an extremely high speed

Our lives are changing rapidly due to technological progress.

Frequency

Movie subtitles
1.40 per million appears in 1% of films
Written text
6.86 per million

Details

HSK 3.0
Level 7

Sources

Definitions
CC-CEDICT