For instance, when we water a plant, water permeates its roots and is transported to the cells of every little leaf. The plant is nourished by the nutritious water.

• 像我们浇水到一棵树,那棵树的根会吸那些水进来,再输送到每一片叶子小小的细胞里面去,让它茂盛起来,因为水很补。