(Pls help to revise the Quantity from 819pcs to 820pcs)的翻译：(Pls help to revise the Quantity from 819pcs to 820pcs) 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

（请帮助修改量从819pcs 820pcs）

(Pls help to revise the Quantity from 819pcs to 820pcs)

(Pls help to revise the Quantity PCs from 819 to 820 PCs)

(Pls help to revise the Quantity from 819pcs to 820pcs)