此外，男性婴儿可能更加脆弱，当皮质醇水平增高时，流产的可能性更大，这也导致了更多女婴的诞生。

In addition, male babies may be more fragile and so more likely to be miscarried when cortisol levels are high, leading to more girls being born.

youdao

此外，男性婴儿可能更加脆弱，当皮质醇水平增高时，流产的可能性更大，这也导致了更多女婴的诞生。

In addition, male babies may be more fragile and so more likely to be miscarried when cortisol levels are high, leading to more girls being born.

youdao