这样会使落叶集中起来，并且去除较大的树叶和树枝。
This will concentrate the litter and remove larger leaves and twigs.
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。
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.
它们为许多动物提供了庇护所，它们的树干和树枝可以变成花园，上面挂着绿色的蕨类植物、兰花和凤梨科植物，覆盖着苔藓和藤蔓。
They provide shelter for many animals, and their trunks and branches can become gardens, hung with green ferns, orchids and bromeliads, coaled with mosses and draped with vines.
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