Lassa fever is an acute viral illness of one to four weeks duration caused by Lassa virus, a member of the arenavirus family of viruses.是什么意思_Lassa fever is an acute viral illness of one to four weeks duration caused by Lassa virus, a member of the arenavirus family of viruses.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句