flat mirror

例句：

1. 1. The floor is very smooth andeasy to clean.
   地板非常光滑，容易清洁。
2. 2. The table is flat, so it's easy to move around.
   桌子是平的，所以很容易移动。
3. 3. The carwas flat broke when I bought it.
   我买那辆车时，它负债累累。