trifurcate

adj.三叉的v.分成三叉

分为三部分；分为三个支路

动词

1. The river trifurcates into three smaller streams as it flows through the valley.
这条河流在山谷中分成三条较小的支流。

2. The road trifurcates ahead, so make sure you take the correct turn.
前面的道路分成三个方向，所以一定要选择正确的转弯口。