square solid pipe die

例句：

1. 1. The table is a perfect square.
   这张桌子是完美的正方形。
2. 2. Theroom is squared offwith walls.
   房间被墙壁围起来。
3. 3. The square has been repainted in bright colors.
   这个广场已经被重新粉刷成鲜艳的颜色。