下面三个备件，请提供价格，需求总QTY为21件。的翻译：Three spare parts below, please provide the price, demand total QTY for 21. 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

The following three spare parts, prices, demand total qty 21.

Three spare parts below, please provide the price, demand total QTY for 21.

Following three spare parts, please provide the price, demand total QTY are 21.

The following 3 spare parts, please provide a price, the demand for Total QTY 21.

Three spare parts below, please provide the price, demand total QTY for 21.