The news that the couple conceived both sets without the aid of fertility treatment, which significantly increases the chances of a multiple pregnancy, shocked local fertility doctors.

• 这对夫妇两胎都是自然怀孕，没有接受生育治疗，因为生育治疗会增加怀多胞胎的机率。这个消息让当地妇产科医生相当震惊。