"Openings located in fortresses or fortified structures."@en . "openings, fortification"@en . "1988-01-01T00:00:00"^^ . "fortification opening"@en . . . "verdedigingswerkopeningen"@nl . "b\u01CEo l\u011Bi k\u0101i k\u01D2u"@zh-latn-pinyin-x-notone . "bao lei kai kou"@zh-latn-pinyin-x-hanyu . "pao lei k'ai k'ou"@zh-latn-wadegile . . "2017-08-25T10:49:13"^^ . "verdedigingswerkopening"@nl . . "300069410" . "fortification openings"@en . . "\u5821\u58D8\u958B\u53E3"@zh-hant . "vanos de fortificaci\u00F3n"@es .