When we enter a country, we have to get through customs first.

当我们进入一个国家时，我们必须先通过海关。

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If you enter Bulgaria with cash of any currency amounting to the equivalent of Leva 8000 or more, you must declare it to customs officials.

假如你进入保加利亚与任何货币的现金总额为等效的莱瓦8000或更多，你必须给海关官员申报。

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Next time you enter or leave the U.S., check the customs form for this reference.

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These allow trusted travelers to enter the United States and Canada with expedited clearance through immigration, security, and customs.

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Rockefeller and other critics of the industry say that cruise lines that are headquartered in the United States but have their ships registered elsewhere are getting a free ride on the backs of U.S. taxpayers, placing demands on federal agencies such as Immigration, Customs and the Coast Guard, which are charged with oversight when those ships enter and leave U.S. ports.

CNN: July 8, 2012 -- Updated 1911 GMT (0311 HKT)