Question

Minding the Summer Learning Gap?

Answer 1

原文是：

Each new school year brings fresh reminders of what educators call the summer learning gap.Some call it the summer learning setback.Put simply,it means the longer kids are out of school,the more they forget.

所以,the Summer Learning Gap=summer learning setback

指的是学生在夏季学习的退步（夏季指的其实是暑假）

通俗点就是：孩子们离开学校时间越长,他们忘的知识越多!