日期:
来源:雅诚德英语网
One theory is that bipedality evolved in conjunction with the nuclear family: monogamous parents cooperating to care for their offspring.
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.
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。