complanarity

例句：

1. 1. The new flat is very spacious and has a great view of the city skyline.
   新公寓非常宽敞，可以一览城市天际线。
2. 2. The road was flat and easy to drive on.
   这条路很平，很好开。
3. 3. The table is plain and unadorned, perfect for serving food.
   桌子朴素无装饰，非常适合摆放食物。
4. 4. The water is even, which makes swimming easier.
   水很平，游泳更容易了。
5. 5. The floor is smooth, making it easy to clean.
   地板光滑，容易清洁。
6. 6. The surface is flat, which means it won't warp when you cook on it.
   表面平坦，意味着在它上面烹饪不会变形。
7. 7. The ground is even, so there are no bumps or dips in the path.
   地面平坦，所以路径上没有坑洼或凹陷。
8. 8. The surface is smooth, which makes it ideal for painting or carving.
   表面光滑，非常适合绘画或雕刻。
9. 9. The floor is flat, which makes it easy to walk on without slipping.
   地板平坦，走在上面不容易滑倒。
10. 10. The surface is even, so it doesn't have any bumps or depressions.
    表面平整，所以没有坑洼或凹陷。