customs
/ˈkʌstəmz/plural noun
1- the official department that administers and collects the duties levied by a government on imported goods海关：
cocaine seizures by customs have risen this year
今年海关查获的可卡因有所增长
as modifier a customs officer.海关官员。
1.1
- the place at a port, airport, or frontier where officials check incoming goods, travellers, or luggage（港口、机场或边境的）海关关口：
we were through customs with a minimum of formalities.
我们以最简化的手续通过了海关。
1.2
- （一般作customs duties）the duties levied by a government on imported goods关税。
词源
late Middle English: originally in the singular, denoting a customary due paid to a ruler, later duty levied on goods on their way to market.