为什么树叶不能只是改变颜色，继续在树上生长，而当春天到来的时候再变回绿色？
Why can't leaves change colors, stay on their trees, and change back to green again when spring comes?
大在夏天和秋天变黄的树叶是绿色的，鸟儿在树上建造他们的房子，蚂蚁爬上爬下为自我的生活。
Its big leaves are green in summer and turn yellow in autumn, birds build their house in the tree, ants climb up and down for their own lives.
绿色的树叶在树上跳舞。
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