交替

jiāotì
  1. to replace
  2. alternately; in turn

CEDICT

Entry Composition

1 交 jiāo
  1. to hand over; to deliver; to pay (money); to turn over
  2. to make friends
  3. (of lines) to intersect
  4. variant of 跤 jiāo
2 替 tì
  1. to substitute for
  2. to take the place of
  3. to replace
  4. for
  5. on behalf of
  6. to stand in for