The result is a blue rectangle with a square region toward its lower-right corner missing.

结果得到蓝色矩形，其右下角方向缺少一个正方形区域。

youdao

The result is a blue rectangle with a square region toward its lower-right corner missing.

结果得到蓝色矩形，其右下角方向缺少一个正方形区域。

youdao