一來二去

一来二去
yīlái'èrqù

in the course of contacts; gradually; little by little

Wiktionary

Homographs

一來二去 yīláièrqù
  1. gradually
  2. little by little
  3. in the course of time

Entry Composition

1 一來 yīlái firstly, ...
2 二 èr
  1. two
  2. 2
  3. (Beijing dialect) stupid
3 去 qù
  1. to go
  2. to go to (a place)
  3. (of a time etc) last
  4. just passed
  5. to send
  6. to remove
  7. to get rid of
  8. to reduce
  9. to be apart from in space or time
  10. to die (euphemism)
  11. to play (a part)
  12. (when used either before or after a verb) to go in order to do sth
  13. (after a verb of motion indicates movement away from the speaker)
  14. (used after certain verbs to indicate detachment or separation)