相關(guān)單詞近義詞 security 安全, defense 防衛(wèi), entrenchment 掘壕溝, dike 堤壩, wall 墻壁, bulwark 壁壘, fortification 防御工事（尤指堡壘、要塞..., embankment 堤防, bastion 棱堡, earthwork 土方工程, battlement 城垛, parapet 低矮擋墻, barricade 【C】路障, barrier 柵欄臨近詞Ramsay, rampant, rampart n., rampart protection, Rampart of Chuansha 返回 ramparting