pre-school age

例句：

1. 1. The child is at pre-school age, so he needs tobe supervised by his parents.
   这个孩子还在学龄前，所以他需要由父母监管。
2. 2. The pre-school program helpschildren develop social skills and prepares themfor school.
   学龄前项目帮助孩子们发展社交技能，并为学校做好准备。
3. 3. Pre-school education plays a crucial role ina child's development.
   学龄前教育在儿童发展中起着至关重要的作用。