一天,我来到村南的树林里,发现地上掉着许多树叶。这些树叶是竖着的,不像一般的树叶平躺在地上。我好奇地走过去。咦,怎么是三片叶子长成三角包的样子?我捡起一只“三角包”,里面还有种子呢!我仰起头,看到身边一棵树的树枝上长满了这种“三角包”,也长着一片片分开的树叶。我猜 One day, I came to the woods in the village south and found many fallen leaves on the ground. These leaves are vertical, unlike ordinary leaves lying on the ground. I walked curiously. Why are three leaves growing like a triangle bag? I picked up a “triangle bag” with seeds inside. I looked up and saw the branches of a tree covered with this kind of “triangle Package ”, also has a piece of leaves separated. I guess