loose and open surface

例句：

1. 1. Thepaint on the wall is so loose thatit can be easily rubbed off.
   墙上的油漆太松散了，很容易擦掉。
2. 2. The newdesign of the car has aloose and open surface.
   这款新车的设计非常松散和开放。
3. 3. The roof of thehouse is loose and open, allowing rainto enter easily.
   房子的屋顶松散且开放，雨水很容易进入。