branch point of a morphism

例句：

1. 1.This is the branch point where the two rivers meet.
   这是两条河流交汇的分叉点。
2. 2.The tree has a unique branching point that makes it look different from other trees.
   这棵树有一个独特的分叉点，使它看起来与众不同。
3. 3. The scientist found a new branching point in the genome of the virus.
   科学家在病毒的基因组中发现了一个新的分叉点。