pregnancy rat造句怎么写

cumulative spontaneous pregnancy rate

The government set itself a target in 1999 to half the teenage pregnancy rate by 2010.

Teen pregnancy rates are an indicator of how a nation is treating its women.

We have alarming rates of teenage substance abuse and the highest teenage pregnancy rate in the developed world.

Another sensitive problem is the growing pregnancy rate among girl students.

The pregnancy rate of normal fimbria and unobstructed tube after lysis of periadnexal adhesion was 47.4%, 26 cases of laparoscopic salpingostomy had no pregnancy.

Hysteroscopic surgery to remove endometrial polyps can significantly improve the pregnancy rate of endometrial polyps lead to infertility.