developmental disturbance

例句：

1. 1. The child's developmental delay has been causing concern for the parents.
   孩子的发育迟缓让父母很担心。
2. 2. The research suggests that early childhood experiences can have a significant impact on later developmental outcomes.
   研究表明，儿童早期的经历对他们后来的发展结果有重大影响。
3. 3. The child's progress in language and cognitive development is slower than expected, which is a developmental disturbance.
   这个孩子在语言和认知发展方面的进步比预期的要慢，这属于发育障碍。