branch on condition clear

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 is a vast field that explores the natural world.
   科学分支是一个广阔的领域，探索自然世界。
3. 3.The branch of the forest is home to many different species of animals.
   森林的分支是许多不同种类动物的家园。