hairpin bend

例句：

1. 1. The road takes a hairpin bend around the mountain.
   这条路在山周围绕了一个发夹弯。
2. 2.The car made a hairpin bend and almost hit a tree.
   汽车绕了一个发夹弯，差点撞到一棵树。
3. 3. The river winds through several hairpin bends before it reaches the sea.
   这条河穿过几个发夹弯，最后到达大海。