ballottement of fetus

例句：

1. 1. The couple decided to have an abortion because of the risk of pregnancy complications.
   这对夫妇决定进行人工流产，因为怀孕并发症的风险。
2. 2. The woman was miscarriage at 20 weeks gestation.
   这位妇女在20周妊娠期时发生了自然流产。
3. 3. The medical team performed a ballottement to save the fetus's life.
   医疗团队进行了堕胎手术来拯救胎儿的生命。