城楼的英文：
city gate tower

参考例句：

There are many strong and stately towers in Beijing
北京有很多坚固而雄伟的城楼。

Each gate tower of the city wall and each pailou (decorated archway) can be seen from afar
每一个城楼，每一个牌楼，都可以从老远就看见。

He will direct the blows of his battering rams against your walls and demolish your towers with his weapons.
他必安设撞城锤攻破你的墙垣，用铁器拆毁你的城楼。

city是什么意思：
n. 都市，城市；特许市；全市居民；伦敦商业区；充满...的地方

the city of York
约克特许市.

beleaguer a city
围攻一座城市

The cleanliness of European cities puts our cities to shame.
欧洲各城市的整洁使我们的城市相形见绌。

gate是什么意思：
n. 大门；出入口；闸门；登机门

Close the lock gate please.
请关上闸门。

Please keep clear of the gates.
请勿靠近门。

main gate lodge
大闸区；大闸门房；大闸传达室

tower是什么意思：
n. 塔；堡垒
v. 高耸；超越

sketch of the tower
对那座塔作素描

A small tower or tower-shaped projection on a building.
塔楼,角塔建筑物上伸出的小型塔或塔状建筑

The towers are surfaced with steel plates.
在塔面上加了一层钢板。