pre·si·dio /prɪˈsidiˌo, ˈsɪ, ˈzi, ˈzɪ-/
要塞;流刑地;充軍地
Pre·si·di·o n. A place of defense; a fortress; a garrison; a fortress; a garrison or guardhouse.
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presidio
n : a fortress established in the southwestern United States by
the Spanish in order to protect their missions and other
holdings; "Tucson was first settled as a walled presidio"