然而，从20到30年龄段的中段开始，来自蜥蜴脑（译注：蜥蜴脑是人脑中掌管与理性思考无关的部分，也被科学研究证实是掌握本能的古老部分。 ［百度百科］）的多育子女的内在冲动正面对一个残酷的现实：在这段仅存的生育期里，女人怀孕变得越来越难。

However, after the mid-20s, the lizard-brain impulse to have more kids faces a stark reality: it's harder and harder to get pregnant as a woman's remaining eggs age.

youdao

然而，从20到30年龄段的中段开始，来自蜥蜴脑（译注：蜥蜴脑是人脑中掌管与理性思考无关的部分，也被科学研究证实是掌握本能的古老部分。 ［百度百科］）的多育子女的内在冲动正面对一个残酷的现实：在这段仅存的生育期里，女人怀孕变得越来越难。

However, after the mid-20s, the lizard-brain impulse to have more kids faces a stark reality: it's harder and harder to get pregnant as a woman's remaining eggs age.

youdao