求翻译：特别是血缘关系，还具有无法选择性和不可替代性。我们常说的利他主义在市场关系中因没有收益，故其存在的可能性不大，但在家庭却较为普遍。这是因为其可以提高家庭成员抵御突变和其他不测事件的能力，分散风险和损失。是什么意思？

Especially blood relations, but also has not selective and irreplaceable. We often say that altruism is not in revenue due to market relations, so its existence is unlikely, but is more common in the family. This is because family members can increase their mutation and other unexpected events again

In particular, their blood relationship, and it also has a cannot be selective and is irreplaceable. We often say that the altruism in relationships in the market because there are no income, its presence in the family, but there is little possibility of the is much more prevalent. This is because i

Specially blood relationship relations, but also has is unable the selectivity and not the interchangeability.We often said because altruism does not have the income in the market relations, therefore its existence possibility is not big, but is actually common in the family.This is because its may

Especially the blood relationship, you cannot selectively and irreplaceable. We often say that altruism in the market because of lack of income, so its existence is unlikely, but are more common in families. This is because it can increase the capacity of family members against mutants and other une

Especially blood ties, plus cannot selectively and irreplaceable. We often say that altruism in the market because of lack of income, so its existence is unlikely, but are more common in families. This is because it can increase the capacity of family members against mutants and other unexpected eve