这群学校建筑坐落在一片不等边四边形地块上，相当于两栋被毁建筑其中一栋原先的所在地。
The group of schools occupies a trapezoid-shaped plot of land obliterated by the non-aedificandi area corresponding to the location of one of the two buildings that were demolished.
不等边四边形的其余部分便是园子，园子要比波隆梭街的街面低许多，因此围墙在园里一面和外面比起来要高些。
The remainder of the trapezium formed the garden, which was much lower than the level of the Rue Polonceau, which caused the walls to be very much higher on the inside than on the outside.
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