口服含激素的药片会阻止排卵和降低痛经的严重度。

Oral birth control pills contain hormones that prevent ovulation and reduce the severity of menstrual cramps.

youdao

所以，无论是阻止排卵还是阻止移植，都是同样的问题。但是目前还不是非常清楚，也没有研究表明它的具体工作原理，但是我们确实知道这种产品是游泳的。

So, whether it particularly stops ovulation or stops implantation is, is the issue, but it is not really clear and there is no study that you can prove which way it works, but we do know it works.

youdao

所以，无论是阻止排卵还是阻止移植，都是同样的问题。但是目前还不是非常清楚，也没有研究表明它的具体工作原理，但是我们确实知道这种产品是游泳的。

So, whether it particularly stops ovulation or stops implantation is, is the issue, but it is not really clear and there is no study that you can prove which way it works, but we do know it works.

youdao