剑桥词典a child who is born with particular genes that have been chosen in order to treat an older brother or sister who has a disease 兄姐救星（生来就有某些特殊基因的孩子，这些基因是经过特别选择的，用于治疗孩子罹患绝症的哥哥或姐姐） 返回 saviour sibling