根治

gēnzhì
  1. to bring under permanent control
  2. to effect a radical cure

CEDICT

Entry Composition

1 根 gēn
  1. root
  2. basis
  3. classifier for long slender objects, e.g. cigarettes, guitar strings
  4. radical (chemistry)

classifier: 條
2 治 zhì
  1. to rule
  2. to govern
  3. to manage
  4. to control
  5. to harness (a river)
  6. to treat (a disease)
  7. to wipe out (a pest)
  8. to punish
  9. to research