这几栋农舍构成一个正方形的三个边。
把圆形蛋糕切成两半，把每个半圆放在正方形的两边，形成心形的顶部。
Cut the circular cake in half and set each semicircle against adjoining sides of the square to form the top of the heart.
清单6演示了一个简单的例子，这个例子用各种方式描边和填充一些正方形。
Listing 6 demonstrates a simple example in which a few squares are stroked and filled in various ways.
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