突发 tūfā HSK7 sudden Origin Definitions Defs Strokes Stroke Words Sentences Sents 2 sentences 我爷爷死于突发心脏病。 wǒ yéye sǐ yú tūfā xīnzàngbìng. My grandfather died of a sudden heart attack. Source: CCMatrix他知道怎么来应对突发事件。 tā zhīdao zěnme lái yìngduì tūfāshìjiàn. He knows how to handle emergencies. Source: CCMatrix