cus·tom·house /ˈkʌstəmˌhaʊs/
  海關
  Cus·tom·house n. The building where customs and duties are paid, and where vessels are entered or cleared.
  Customhouse broker, an agent who acts for merchants in the business of entering and clearing goods and vessels.
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  customhouse
       n : a government building where customs are collected and where
           ships are cleared to enter or leave the country [syn: customshouse]