而且,至少我瞄了几眼原文,没看出来剑桥论文在驳斥美国起源说。也没有找到这句“A病毒株的確是源自武漢,但後來它的兒子卻反而取代了它,成為在中國的霸主。至於在美國,A病毒株則一直保持著優勢,沒有被兒子取代。”等我安下心来好好找找,或者英文超级好的对岸网友能�嬾韺琚A反正不是这句“In contrast, the B type is the most common type in East Asia, and its ancestral genome appears not to have spread outside East Asia without first mutating into derived B types, pointing to founder effects or immunological or environmental resistance against this type outside Asia.”