congenital prepapillary vascular loops

例句：

1. 1. The child has congenitalhearing loss.
   这个孩子有先天性听力障碍。
2. 2.The disease is congenital,meaning it's present at birth.
   这种疾病是先天性的，意味着它在出生时就有。
3. 3. The genetic makeup of the species islargely determined by its congenitaltraits.
   物种的遗传特征在很大程度上是由其先天性特征决定的。