tā / men / suī / rán / méi / yǒu / xuè / yuán / guān / xì / dàn / bǐ / cǐ / qíng / yú / gǔ / ròu

他们虽然没有血缘关系，但彼此情逾骨肉。

Although they are not related by blood, their bond is deeper than that between flesh and blood.