习惯性流产

例句：

1. 1. She had a history of recurrent miscarriages before she became pregnant.
   她怀孕前有反复流产的历史。
2. 2. The doctor advised her to take folic acid supplements during pregnancy to reduce the risk of habitual miscarriage.
   医生建议她在怀孕期间服用叶酸补充剂，以减少习惯性流产的风险。
3. 3. After several attempts at in vitro fertilization, they finally succeeded in conceiving a healthy baby.
   经过几次体外受精尝试后，他们终于成功地怀上了健康的宝宝。