un·der·growth /ˈʌndɚ/
下層叢林,生于大樹下的矮樹
Un·der·growth n. That which grows under trees; specifically, shrubs or small trees growing among large trees.
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undergrowth
n : the brush (small trees and bushes and ferns etc.) growing
beneath taller trees in a wood or forest [syn: underbrush,
underwood]