小林带着从树林深处拿来的土，回到家里，开始认真思考。
Xiao Lin brought the soil she had collected from deep in the forest back home and began to think carefully.
她把这几天学到的东西都写在本子里，仔细地看了一遍。
She wrote down everything she had learned over the past few days in her notebook and read through it carefully.
她想到，长在大树旁边的小植物，因为没有阳光，叶子是黄绿色的，长得不好。
She thought about how small plants growing beside big trees had yellowish-green leaves and were growing poorly because they didn't get enough sunlight.