The orderer must then be prepared to respond to a request (callback, in this case) to process the final invoice.

订货方然后必须响应一个请求（在本例中是回叫）来处理最终的货物。

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Clients should find no surprises when receiving a final invoice, but if the consultant neglects to include shipping costs in preliminary conversations, such fees will prove problematic.

当收到最终发货单的时候，客户应当不会有出乎意料的发现，但是如果顾问疏忽大意，没有在初步沟通中将运输成本考虑在内，此类费用就会是个问题。

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