The city wall protected the ancient city.

城墙保护了古城。

We took a walk along the city wall.

我们沿着城墙散步。

They are restoring the old city wall.

他们正在修复旧城墙。

They installed a cannon on the city wall.

他们在城墙上安装了火炮。

You can see the entire city from the city wall.

你可以从城墙上看到整个城市的景色。

The history of the city wall dates back hundreds of years.

城墙的历史可以追溯到几百年前。

The Xi'an City Wall is the most complete city wall that has survived China's long history.

西安城墙是中国悠久历史上留存最完整的城墙。

It took us about 3 hours to go all the way around the Xi'an City Wall.

我们花了大约3个小时走完西安城墙。

City wall roof nearly ten meters.

城墙最高处将近十米。

Xi'an City Wall dates back to the Ming dynasty.

西安古城墙始建于明朝。