DHL Shipment Airwaybill issued within 15 days from the B/L date and Seller's statement showing the delivery of 1/3 original B/L to the Buyer;是什么意思 DHL Shipment Airwaybill issued within 15 days from the B/L date and Seller's statement showing the delivery of 1/3 original B/L to the Buyer;怎么读