a quadrangle surrounded by buildings是什么意思？

a quadrangle surrounded by buildings

有房屋围着的方形院子

quadrangle

n. 四边形，（尤指大学的学院等的）四方院子；

例句
The fine, intelligent, educated voice sang on in the sunny quadrangle of red - brick Colonial buildings.
那美妙, 聪明, 受过教育的声音回响在充满阳光的,殖民时期的红砖房子围成的庭院中.

surrounded

adj. （后面与by,with连用）被…环绕着的；v. 包围( surround的过去式和过去分词 )，与…紧密相关，围绕，喜欢结交（某类人）；

例句
The coffins stood in the baking heat surrounded by mourners.
棺材放在炽热的太阳下，周围是哀悼的人们。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

buildings

n. 建筑物( building的名词复数 )，楼房，房屋，建筑（艺术或行业）；

例句
...abandoned buildings that become a breeding ground for crime.
沦为了犯罪温床的弃置楼群