一个英文句子,几个介词为什么放一块?

题目

一个英文句子,几个介词为什么放一块?
Many goverments have responded by investing in new technology for schools so that pupils can learn both with and about computer-based systems.
这里both 开始又with 又and 又about ,它们这么放,让我不能理解意思.是用到什么表达方法了.我知道里面有both .and 但是并列两个介词?为什么

答案

pupils can learn both with and about computer-based systems
完整的说法是：
pupils can learn with computer-based systems and they can learn about computer-based systems
学生们可以用基于计算机的系统来学习,还可以学习有关基于计算机的系统的知识.