Giải nghĩa: A military stronghold, especially a strongly fortified town.
Nghĩa: Pháo đài
Không phổ biến
Cách sử dụng từ vựng "Fortresses" trong câu (ví dụ)
It was an integrated military defensive system with watchtowers for surveillance, fortresses for command posts and logistics, beacon towers for communications, etc.