The developmental quotient (DQ) is used to assess a child's development in comparison to their peers.
发育商数（DQ）用于评估儿童与同龄人相比的发展情况。
Educators often use the developmental quotient to track a child's progress over time.
教育工作者经常使用发育商数来追踪儿童随时间的发展进度。