還原

还原
huányuán
  1. to restore to the original state
  2. to reconstruct (an event)
  3. reduction (chemistry)

CEDICT

chemistry

Entry Composition

1 還 huán
  1. to pay back
  2. to return
2 原 yuán
  1. former
  2. original
  3. primary
  4. raw
  5. level
  6. cause
  7. source