square pillar vertical drilling machine

例句：

1. 1. The room is square, so it's easy to move around in.
   这个房间是正方形的，所以在里面移动很方便。
2. 2. The table is square, so it's perfect for eating meals together.
   桌子是正方形的，所以非常适合一起用餐。
3. 3. The square has a lot of shops and restaurants.
   这个广场有很多商店和餐馆。