救命啊，求帮忙翻译CATO客户的装箱单要求

? ? ? ? ? a separate packing slip for each carton id number (line number on the purchase order) ? ? ? ? or a copy of the invoice for the total purchase order, detailed by carton id number (line ? ? ? ? number on the purchase order), must be affixed to the outside of the lead carton. ?? ? ? ? the carton id number that corresponds to the merchandise should be highlighted on the packing slip. ? ? ? ? ? the lead carton with the packing slip for each carton id number (line number on the purchase order) or a copy of the invoice for the total purchase order, detailed by carton id number (line number on the purchase order), must be clearly identified as the lead carton. ?? ? ? ? if multiple purchase orders are packed in a crossdock carton, all of the purchase order packing slips must accompany the lead carton. 这一段是什么意思啊