疫苗 yìmiáo HSK7 vaccine Definitions Defs Origin Strokes Stroke Words Sentences Sents 减毒活疫苗 jiǎndúhuóyìmiáo attenuated live vaccine 流感疫苗 liúgǎnyìmiáo flu vaccine influenza vaccine登革疫苗 dēnggéyìmiáo dengue vaccine