delivery order (a written, signed and dated order to deliver merchandise, which may be issued to or by a warehouse, a railroad company, a steamship company or airline, or anyone who has authority and legal right to claim or order delivery of goods)是什么意思 delivery order (a written, signed and dated order to deliver merchandise, which may be issued to or by a warehouse, a railroad company, a steamship company or airline, or anyone who has authority and legal right to claim or order delivery of goods)怎么读