All of them are in stable condition. Preliminary laboratory results showed three stool samples positive for norovirus, a common cause of viral gastroenteritis.是什么意思_All of them are in stable condition. Preliminary laboratory results showed three stool samples positive for norovirus, a common cause of viral gastroenteritis.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句