首先用四天完成关于它的学习的翻译：Completed on its first four days of learning 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

The first four days to complete its study on

Completed on its first four days of learning

First uses four days to complete about its study

First, you need 4 days to complete its study on

Completed on its first four days of learning