medical research shows that: the abortion out 60%-70% of the specimen fertilized embryos can't finish the development;
医学研究表明:这种流产出来的标本有60%—70%的受精卵不能完成胚胎期的发育;
the embryos as mentioned in these measures refer to the early embryos of livestock obtained in artificial ways, including in vivo fertilized embryos and in vitro fertilized embryos.