名词
中文翻译：正方形
同义词：
['rectangle', 'squared-off', 'squared-off-sided例句：1. The square of a circle is the area of the circle.（圆的面积是圆的平方。）']
例句：
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1. The square of a circle is the area of the circle.
圆的面积是圆的平方。
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2. The square of a number is the product of its digits.
一个数的平方是它的各位数字乘积。
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3. The square of pi is approximately 98 billion.
π的平方大约是980亿。