The paper that was executed was a bill of sale.

执行的件是销售单。

An " itinerary" is usually a piece of paper or a document that lists your travel plans, when you're departing, when you're arriving, where, when, and so on.

“行程单”通常是一张纸或一件，其中列了的旅行计划、间、到达间、地点、间等。

Customs Officer: The following documents are needed: The Captain's Declaration, the Import Cargo Manifest, double Crew Lists, last Port Clearance, duplicates of Crew Personal Articles Lists, Stores and Provisions List. You should have your signature.

下列件必须有：船长申报单，进口货物舱单，两船员名单，上一港结关单，两船员物品明细表，备件和食品一览表，你必须签字。