on sales的用法和樣例：
例句
- Packing has a close bearing on sales.
包裝直接關係到產品的銷售。 - But your product is still new to our market, and we need to do a lot of work and spend a lot of money on sales promotion.
但我們市場對你們產品仍然不太了解，我們在推銷過程中需要做很多工作，花很多錢。 - The advertising campaign didn't have much effect on sales.
這些廣告攻勢對銷售額並沒有起到多大作用。
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