问题描述：
出口外汇核销单的英文定义
如题,谁可以帮我用英文解释一下出口外汇核销单的定义,
问题解答：
我来补答
By the State Administration of Foreign Exchange issued by the export unit and entrusted with the line and pay-line solution filled in so doing accepted the customs declaration,foreign exchange management departments so doing write-off exchange earnings are sequentially numbered certificate (write-off single with stubs).
