flat fixed calandria

例句：

1. 1. Thefloor is very flat and easy to clean.
   地板非常平坦，容易清洁。
2. 2. The tableis flat enough for a group of peopleto sit around it.
   桌子足够平坦，可以供一群人围坐。
3. 3. Thecar was parked ona flat piece of land.
   汽车停在一块平坦的土地上。