retardation of bone age

例句：

1. 1. The child's development is significantly delayed compared to his peers.
   这个孩子的发育明显比同龄人要晚。
2. 2.This condition is often associated with a delay in the growth and development of the child's bones.
   这种状况通常与儿童骨骼生长和发育的延迟有关。
3. 3.The research suggests that early intervention may help prevent or delay the onset of this disease.
   研究表明，早期干预可能有助于预防或延迟这种疾病的发生。