展开分支

例句：

1. 1. The tree has many branches reaching out to the sky.
   这棵树有很多枝条伸向天空。
2. 2. The branch of science that deals with electricity is called electromagnetism.
   涉及电的科学分支叫做电磁学。
3. 3.The branch of the forest that leads to the river is very narrow.
   通往河流的那片森林分支非常狭窄。