An Active Search for AFP Cases in the Contiguous Region of Yunnan and Sichuan Provinces in 2002 and Analysis on Supplementary lmmunization of Oral Polio Vaccine是什麼意思_An Active Search for AFP Cases in the Contiguous Region of Yunnan and Sichuan Provinces in 2002 and Analysis on Supplementary lmmunization of Oral Polio Vaccine在線翻譯_英語_讀音_用法_例句