反渗透 反滲透 fǎn shèn tòu ㄈㄢˇ ㄕㄣˋ ㄊㄡˋ faan2 sam3 tau3

  • anti-infiltration (measures taken against subversive external forces)
  • (chemistry) reverse osmosis

Stroke order

Practice writing

Draw 反 (1 of 3) — stroke by stroke.

Draw each stroke of the character in order using your mouse or finger. A hint appears after three misses.