serumKK [ˋsɪrəm] /ˈsɪɹəm/發音名詞1血清醫學The lab measured the level of protein in her serum.實驗室測量了她血清中的蛋白質濃度。2血清製劑、抗毒血清Doctors injected the snakebite victim with serum within an hour.醫師在一小時內為被蛇咬的患者注射抗毒血清。3精華液She applies a vitamin C serum before her moisturizer every morning.她每天早上先擦維他命C精華液,再上乳霜。