原文：The financing of the sale often involves bills of exchange an

原文：The financing of the sale often involves bills of exchange and documentary credits.
译文：商品销售的金融状况包括:汇票和跟单信用证。
【正确答案】：改进的译文：改进的译文：商品买卖的贷款收付情况体现在汇票或跟单信用证中。