博大精深 bó dà jīng shēn 🔊 wide-ranging and profound HSK 7–9 + Keep this word Meanings bó dà jīng shēn (idiom) wide-ranging and profound Its characters 博bóabundant; plentiful; extensive; wide大dàbig; old (in age)HSK 1精jīngessenceHSK 7–9深shēndeepHSK 4