The purification method was practical and effective,and the purified preS2(epi)S protein showed good immunogenicity compared with S protein.是什么意思_The purification method was practical and effective,and the purified preS2(epi)S protein showed good immunogenicity compared with S protein.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句