反渗透 fǎn shèn tòu

DEFINITIONS

  1. anti-infiltration (measures taken against subversive external forces)
  2. (chemistry) reverse osmosis

CHARACTERS

反 fǎn
HSK 4
reverse, opposite, contrary, anti
渗 shèn
HSK 6
soak through, infiltrate
透 tòu
HSK 5
penetrate, pass through