在以前的研究中已知母亲在怀孕期间经历创伤的影响，但是直到现在尚不清楚怀孕前经历不幸的影响情况。

The effects of trauma that a mother experienced in the course of pregnancy are known from earlier research, but until now the influence of adversity before conception has not been examined.

youdao

在以前的研究中已知母亲在怀孕期间经历创伤的影响，但是直到现在尚不清楚怀孕前经历不幸的影响情况。

The effects of trauma that a mother experienced in the course of pregnancy are known from earlier research, but until now the influence of adversity before conception has not been examined.

youdao