learning machine

例句：

1. 1.This learning machine is designed to help children learn mathematics.
   这个学习机是为了帮助孩子们学习数学而设计的。
2. 2.The teacher used the learning machine to explain the concepts in a more intuitive way.
   老师使用学习机以更直观的方式解释了这些概念。
3. 3.The learning machine has become an essential tool for many students in their studies.
   学习机已经成为许多学生学习中不可或缺的工具。