Home / HSK Vocabulary / HSK 3 / 突然 突然 tū rán HSK 3 · B1 Meanings sudden; abrupt; unexpected Quick facts HSK LevelHSK 3 CEFRB1 ← Back to HSK 3 word list Practice 突然 with flashcards MandoBridge uses spaced repetition to help you remember HSK 3 vocabulary — free on iOS and Android.