劍橋詞典showing a negative result of a blood test for a particular antibody (= a substance in the blood that fights a disease ) 血清反應(yīng)陰性的 children who remain seronegative after polio vaccinations 在接種脊髓灰質(zhì)炎疫苗后血清反應(yīng)呈陰性的兒童 返回 seronegative