刻苦钻研 kè kǔ zuān yán

to study diligently

Word data

HSK Not in HSK
Frequency Unknown

Definitions

  1. 1. to study diligently

Characters

Character Meaning
刻 kè HSK 3
quarter (hour); moment; to carve
苦 kǔ HSK 4
bitter; to suffer; hardship
钻 zuān HSK 6
to drill; to get into; to thread one's way through
研 yán HSK 4
study; research; to grind