children before school age

• 学龄前儿童

children before school age的用法和样例：

例句

1. This kind of toy is mean for preschool children.
   这种玩具专为学龄前儿童制造的。
2. Preschool children suffer most from TV violence.
   学龄前儿童受暴力电视节目的危害最深。