uniovular twins

例句：

1. 1. They are the only pair of uniovular twins in the world.
   他们是世界上唯一的一对连体双胞胎。
2. 2.The discovery of these rare uniovular twins has sparked interest in genetic research.
   这些罕见连体双胞胎的发现激发了对遗传学研究的兴趣。
3. 3.The medical team worked tirelessly to bring the twins together and save their lives.
   医疗团队不懈努力，将这对连体双胞胎团聚并拯救他们的生命。