He has published over 60 papers in refereed journals, of which about 30 have been indexed in the SCI and 20 in the EI.是什么意思_He has published over 60 papers in refereed journals, of which about 30 have been indexed in the SCI and 20 in the EI.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句