刻苦努力 kè kǔ nǔ lì

DEFINITIONS

  1. assiduous
  2. taking great pains

CHARACTERS

刻 kè
HSK 3
carve, engrave; quarter hour
苦 kǔ
HSK 4
bitter; hardship, suffering
努 nǔ
HSK 3
to exert, strive, make an effort; to pout
力 lì
HSK 3
power, capability, influence