This could be the leaves turning from green to yellow or red, the leaves falling to the ground, or the first signs of holly berries.
这可能是叶子从绿色变成黄色或红色，叶子落在地上，或冬青浆果的第一个迹象。
Very little light filters through the canopy of leaves and branches in a rain forest to reach ground level—or close to the ground—and at those levels the yellow-to-green wavelengths predominate.
在雨林中，很少有光透过树叶和树枝形成的树荫到达地面——或者接近地面——在这些高度上，黄色到绿色的波长占主导地位。
Still dark green near its stem, but with its edges colored yellow, it hung bravely from a branch some twenty feet above the ground.
近梗部位仍呈暗绿色，但边缘已经泛黄了，它无所畏惧地挂在离地20多英尺高的枝干上。
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