通过网络学习他很好的掌握了商务英语的翻译：Learning he has very good command over the network for business English 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

By learning his good grasp of business English

Learning he has very good command over the network for business English

Studied he very good grasping commerce English through the network

He had a very good Mastery Learning Network through the Business English

Learning he has very good command over the network for business English