Since 1995, more than 20 outbreaks stemming from the deadly E.Coli O157-H7 toxin have originated in California, contaminating leafy green crops, most recently, spinach.是什么意思_Since 1995, more than 20 outbreaks stemming from the deadly E.Coli O157-H7 toxin have originated in California, contaminating leafy green crops, most recently, spinach.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句