大围墙 meaning in Chinese

enclosure wall

The house , which had been built at the end of the eighteenth century , stood in the middle of a huge square enclosure . it was perfectly unadorned , but the garden possessed magnificent shady trees and a chain of tanks fed by running spring water
他们的房屋是十七世纪末建造的，四周是方方正正的大围墙，房子外观朴实无华但花园里却绿树成荫，几口池塘里的水都是流水，从山泉流来。