curve of areas of waterplanes

例句：

1. 1. The path curves around the hill.
   这条路弯弯曲曲地绕着山。
2. 2. The river flows gently through the valley.
   这条河轻轻地流过山谷。
3. 3. The car's tires are making a curve in the road.
   汽车的轮胎在路中央画了一个圆。