英语翻译three third degree

前面的 three third degree Referees may never be blood relations or other direct or indirect relatives 意思是 “四分之三的学位评判绝不会是由血缘关系或者直系或旁系亲属”，后面的 to the three third degree (四分之三度) 合 or a spouse, cohabiting partner or confidant (或配偶、同居者或密友) 的中间恐怕丢掉了关键词汇，与前面的意思连不起来。