The buildings were draped with red ,white and blue bunting.

The buildings were draped with red ,white and blue bunting.
The buildings were draped with red ,white and blue bunting.

The buildings were draped with red ,white and blue bunting.
那些大楼上插着红色、白色、蓝色的旗子

一大堆红色，白色和蓝色的旗帜将这栋建筑物装饰起来了。

那些房子上悬挂着红色、白色、蓝色的旗子

大楼上挂着（注意是挂着，drape形容了那个状态）红的，白的和蓝色的旗帜

这栋大厦插满了红色，白色以及蓝色的旗帜。