Since 1990, the report said, pregnancy rates are down in almost every category.

工作报告还指出，从1990年起，各个年龄段的怀孕率都呈下降趋势。

youdao

Since 1990, the report said, pregnancy rates are down in almost every category.

工作报告还指出，从1990年起，各个年龄段的怀孕率都呈下降趋势。

youdao