几乎任何一种森林下层植被都可以成为鹿的食物。
Nearly any kind of plant of the forest understory can be part of a deer's diet.
而热带树林更加潮湿，通常只能出现膝盖高的在林下层缓慢蔓延的火势。
Tropical forest is wetter and usually supports only knee-high fires that spread slowly through the understorey.
在景观的种植层包括树（树冠）和林下层以及地平面上，最重要的一层。
The planted layers within a landscape include the tree (canopy) and understory layers as well as the ground plane, the most important layer.
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