虽然他们住在不同的城市，但这些孩子是血亲，因为他们有相同的父母。

These children are ___blood-related even though they live in different cities, as they share the same parents.

他和堂兄弟有血缘关系，但他们很少见面。

He is ___blood-related to his cousin, but they rarely meet.