源源不断 Traditional 源源不斷 yuán yuán bù duàn 🔊 in an unending stream; continuous HSK 7–9 + Keep this word Meanings yuán yuán bù duàn 源源不斷 (idiom) in an unending stream; continuous Its characters 源yuánroot不bùnot; noHSK 1断duànto breakHSK 5