堡壘 angolul

bastion [bastions]▼(projecting part of a rampart)
noun
[UK: ˈbæ.stiən] [US: ˈbæs.tʃən]

citadel▼(a strong fortress that sits high above a city)
noun
[UK: ˈsɪ.tə.dəl] [US: ˈsɪ.tə.ˌdel]

fort [forts]▼(fortified defensive structure stationed with troops)
noun
[UK: fɔːt] [US: ˈfɔːrt]

fortification [fortifications]▼(that which fortifies)
noun
[UK: ˌfɔː.tɪ.fɪˈk.eɪʃ.n̩] [US: ˌfɔːr.tə.fəˈk.eɪʃ.n̩]

fortress [fortresses]▼(fortified place)
noun
[UK: ˈfɔː.trɪs] [US: ˈfɔːr.trəs]

alcazar▼(Moorish fortress in Spain)
noun