bifurcation or trachea

例句：

1. 1.The river has a bifurcation at the bridge.
   这条河在桥处有一个分叉。
2. 2.The road splits into two paths here.
   这条路在这里分成了两条路。
3. 3. The team decided to split up for training.
   队伍决定分开进行训练。