不辭勞苦 bù cí láo kǔ

DEFINITIONS

  1. to spare no effort

CHARACTERS

不 bù
HSK 1
no, not; un-; negative prefix
辭 cí words, speech, expression, phrase
勞 láo labor, toil, do manual work
苦 kǔ
HSK 4
bitter; hardship, suffering