Inthewinterof1910,Dr.WuLien-Tehsteppedoffatraininthenor...
問題詳情：Inthewinterof1910,Dr.WuLien-TehsteppedoffatraininthenorthernChinesecityofHarbin.Hewastheretosolveamedicalmystery,atgreatpersonalrisk.Overthepastfewmonths,anunknowndiseasehadsweptalongtherailwa...