发育不良

例句：

1. 1. The child's developmental milestones were delayed due to the lack of nutrition.
   由于营养不足，这个孩子的发育里程碑延迟了。
2. 2. The team's performance was affected by the underdevelopment of their star player.
   球队的表现受到了他们明星球员发育不全的影响。
3. 3. Malnutrition is a major cause of stunted growth in children.
   营养不良是儿童生长迟缓的主要原因。