流行病学 Traditional 流行病學 liú xíng bìng xué 🔊 epidemiology + Keep this word Meanings liú xíng bìng xué 流行病學 epidemiology Its characters 流liúto flowHSK 4行xíngto walk; to go; to travelHSK 3病bìngillnessHSK 1学xuéto learnHSK 1