C 城堡，堡垒 large fortified building or group of buildings with thick walls, towers, battlements and sometimes a moat

　assail a ～　夺取城堡
　build a ～　建一座城堡
　live in a ～　住在城堡中
　take a ～　夺取城堡
　beautiful ～　美丽的城堡
　impregnable ～　坚不可摧的城堡
　large ～　巨大的城堡
　strong ～　坚固的城堡

　The ancient castle commands the town.　这座古堡俯瞰全城。
　Castles were lived in by rulers and powerful people.　城堡由统治者和有权势的人居住。
　The castle was built in the 80's of the 18th century.　那座城堡是18世纪80年代建造的。
　The lofty walls of the castle seemed impregnable.　这座城堡的高墙似乎坚不可摧。
　The castle stands in a picturesque setting surrounded by hills.　这座城堡四周环山，风景如画。

 ♣ a castle in the air
　空中楼阁　only an idea in mind
　Instead of working hard at her lessons, Mary spends her time building a castle in the air.　玛丽不用功读书，却花时间去幻想。
　He's only building a castle in the air.　他只不过是在做白日梦。

　［同义词］ mansion, palace
　［词源］　拉丁语castellum（城堡）