pinnatevenation

例句：

1. 1. The tree has a pinnate venation pattern, which is typical of many tropical trees.
   这棵树具有分枝的藤蔓模式，这是许多热带树木的典型特征。
2. 2. The scientist observed the pinnate venation in the leaves of the plant and noted its importance inphotosynthesis.
   科学家观察了这种植物叶子中的分枝藤蔓，并注意到它在光合作用中的重要性。
3. 3.The pinnate venation pattern helps the plant to grow more robustly and efficiently.
   分枝藤蔓模式有助于植物生长得更加健壮和高效。