square parachute

例句：

1. 1.The table is square and has four legs.
   桌子是正方形的，有四条腿。
2. 2.The room is square and has a large window.
   房间是正方形的，有一个大窗户。
3. 3.The square is the center of the city.
   这个广场是城市的中心。