flat coast

例句：

1. 1. The road is flat and easy to drive on.
   这条路平坦，易于驾驶。
2. 2. The table is flat, so it's easy to clean.
   桌子是平的，所以很容易清洁。
3. 3. The car is flat, which makes it easy to park.
   汽车是平的，这使得停车变得容易。