number of primary leaves

例句：

1. 1. The forest ishome to a diverse range of plant species, including many primary leaves.
   这个森林里有各种各样的植物物种，包括许多主要的叶子。
2. 2.The scientist carefully counted the number of primary leaves on the tree.
   这位科学家仔细地数了树上主要叶子的数量。
3. 3.The researcher found that the number of primary leaves in this region was significantly higher than in other areas.
   研究者们发现，该地区的主要叶子数量明显高于其他地区。