促销对于销售一种产品来说是有必要的（promotion）的翻译：Promotions to sell a product that is necessary (promotion) 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

Sales promotion for a product is necessary (promotion)

Promotions to sell a product that is necessary (promotion)

The promotion regarding sells one product to have necessity (promotion)

Marketing for the sale of a product is necessary (promotion)

Promotions to sell a product that is necessary (promotion)