大多数牵扯到父亲的家庭理论都提到我们所熟悉的《男人，猎人》中的特性描写，即父亲保护孩子的安全，并为孩子提供生活费用。
Most theories for the family involvement of fathers invoke the familiar "Man the Hunter" characterization, in which dad protects and provides for his young.
大多数牵扯到父亲的家庭理论都提到我们所熟悉的《男人，猎人》中的特性描写，即父亲保护护孩子的安全，并为孩子提供生活费用。
Most theories for the family involvement of fathers invoke the familiar Man the Hunter characterization, in which dad protects and provides for his young.
有一种理论认为，两足动物的进化与核心家庭有关：一夫一妻制的父母合作照顾他们的后代。
One theory is that bipedality evolved in conjunction with the nuclear family: monogamous parents cooperating to care for their offspring.
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