海关

In a sentence

• 我到达机场后，首先去了海关办理过境手续。

  After I arrived at the airport, I first went to the customs to handle border crossing procedures.

  Here, 海关 refers to the customs authority, an entity responsible for regulating goods and people entering or leaving a country.

• 海关人员检查了我的行李，确保没有任何违禁物品。

  The customs staff inspected my luggage to ensure there were no prohibited items.

  In this sentence, 海关 denotes the customs officials who carry out inspections at points of entry, such as airports or ports.

• 请在通过海关时准备好护照和其他必要的文件。

  Please prepare your passport and other necessary documents when passing through customs.

  Here, 海关 is used in the context of the location or process of passing through customs where official checks occur.