federal enclave
federal enclave 联邦飞地 在一州内的联邦机构所在地,如军事基地。属于美国的特殊海事和属地管辖权之内的地区。
Territory or land that a state has ceded to the United States. • Examples of federal enclaves are military bases, national parks, federally administered highways, and federal Indian reservations. The U.S. government has exclusive authority and jurisdiction over federal enclaves. [Cases: United States 3. C.J.S. United States §§ 9–15.]