DIC_2_3.13.3.1 城墙、外郭、城垛(city wall, rampart, battlement)[br/]
DIC_2_3.13.3.3 了望塔、塔楼、塔(watchtower, tower)[br/]
DIC_2_3.13.3.5 城门(city gate)[br/]
DIC_2_3.13.3.5.1 门闩、闩(gate bar, bolt)[br/]
DIC_2_3.15.2.3.5 横木、杠(bar, pole)[br/]