组合主键怎么设置:The Purchase Order Commodities shall be free of any liens.是什么意思啊？

be covered by the purchase order中文什么意思？ blacket purchase order是什么？ The Purchase Order Commodities shall be free of any liens.是什么意思啊？ purchase order 正确翻译是什么啊 unsettled credit and debt under Purchase Order什么意思啊？ 启动，The order the Old Order Amish Seller’s premises identified under this Purchase Order 什么意思啊？ 翻译:** is the order of the day to order of 和 to the order of 的区别