bifurcation of pulmonary trunk

例句：

1. 1.The bifurcation of the river has caused problems for navigation.
   河流的分叉给航行带来了问题。
2. 2. The tree's branches are bifurcating into two distinct groups.
   这棵树的树枝正在分成两个不同的组。
3. 3.The process of natural selection is akin to the bifurcation of species over time.
   自然选择的过程类似于物种随着时间的推移而发生的分裂。