我学习市场营销，主要是学习商品的推销的翻译：I study marketing, mainly commodity sales 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

I learned marketing, mainly to learn the marketing of goods

I study marketing, mainly commodity sales

I study the market marketing, mainly is studies the commodity the sales promotion

I am learning marketing, mainly the study of commodity marketing

I study marketing, mainly commodity sales