1·Many women who miscarry eventually have healthy babies.
许多曾经流产过的女人最终都生下了健康的宝宝。
—— 《柯林斯英汉双解大词典》
2·Many embryos that have damaged or missing chromosomes miscarry, but others go on to produce conditions such as Down's syndrome.
很多使胚胎发生破坏或者丢失染色体而导致流产，但有一些则出现如唐氏综合征这样的状况！
3·Some factors like smoking and age can contribute to the likelihood a woman might miscarry but doctors usually can't pinpoint a reason.
一些因素，比如吸烟和年龄大是女性流产可能的原因，但医生们通常并不能查明原因所在。
4·Some factors, like smoking and age, can contribute to the likelihood a woman might miscarry, but doctors usually can't pinpoint a reason.
一些因素，比如吸烟和年龄大是女性流产可能的原因，但医生们通常并不能查明原因所在。
5·Having the wrong number of chromosomes can cause an embryo to miscarry, or lead to serious medical conditions such as Down's syndrome.
卵细胞染色体数目错误可能会导致胚胎流产，或导致唐氏综合征之类的严重婴儿病症。