迅速蔓延 xùn sù màn yán

DEFINITIONS

  1. rapid spread
  2. to spread rapidly

CHARACTERS

迅 xùn
HSK 5
quick, hasty, rapid, sudden
速 sù
HSK 4
quick, prompt, speedy
蔓 màn
HSK 6
creeping plants, tendrils, vines
延 yán
HSK 5
delay, postpone, defer