流感疫苗 liúgǎnyìmiáo flu vaccine Origin Definitions Defs Strokes Stroke Words Sentences Sents 流感 liúgǎn noun flu flu; influenza; an abbreviation for 流行性感冒 liúxíngxìnggǎnmào疫苗 yìmiáo noun vaccine a biological preparation used to provide immunity against a specific disease