原文：The seller must deliver goods which are of the quantity, qual

原文：The seller must deliver goods which are of the quantity, quality and descriptions required by the contract and which are contained or packed in the manner required by the contract and which are contained or packed in the manner required by the contract.
译文：卖方交付的货物必须与合同所规定的数量、质量和描述一致,并按照合同的方式装箱或包装。
【正确答案】：改进的译文：买方交付的货物必须与合同所规定的数量，质量和规格一致，并按照合同的要求装箱或包装。