音标：['fɒ:tris]
n. 城堡, 要塞
vt. 筑要塞, 以要塞防守
英汉词典

fortress的短语、例句：

fortress n castle or large fort; town strengthened against attack 城堡或大的碉堡; 加强防御能力的城镇
attempts to capture this well-protected fortress 夺取这座坚固堡垒的多次进攻.