起到

qǐdào
(in an expression of the form 起到 qǐdào + … + 作用 zuòyòng) to have (a (motivating etc) effect); to play (a (stabilizing etc) role)

CEDICT

Entry Composition

1 起 qǐ
  1. to rise
  2. to raise
  3. to get up
  4. to set out
  5. to start
  6. to appear
  7. to launch
  8. to initiate (action)
  9. to draft
  10. to establish
  11. to get (from a depot or counter)
  12. verb suffix, to start
  13. starting from (a time, place, price etc)
  14. classifier for occurrences or unpredictable events: case, instance
  15. classifier for groups: batch, group
2 到 dào
  1. to reach; to arrive
  2. to leave for; to go to
  3. to (a place); until (a time); up to (a point)
  4. (verb complement indicating arriving at a place or reaching a point)
  5. considerate; thoughtful; thorough