New Words：

square [skwer] n. 平方；正方形；四方形；正方形物；广场

Sample Sentences：

The square of 7 is 49.
A square has four equal sides.
The little girl drew a square on the paper.
Today, my sister and I went skating on the square.
Excuse me. Can you tell me where the Tian'anmen Square is, please?

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