undergrowth

n.

矮树丛，灌木丛；（动物）浓密绒毛；发育不全；

1. We hacked our way through the undergrowth.
   我们披荆斩棘在矮树丛中前进。
2. There was a sudden movement in the undergrowth.
   矮树丛里突然有什么东西动了一下。
3. Their daily trips through the jungle have made a path in the thick undergrowth.
   他们每天往返穿过丛林，已在茂密的矮丛中踩出了一条小路。

Uses of Undergrowth Plant Species in Forestry
Demography of an undergrowth palm in littoral Cameroon.
Undergrowth as a biomonitor for deposition of nitrogen and acidity in pine forest.
Rustling in the undergrowth: animals in early terrestrial ecosystems
Effects of Fire on Undergrowth Vegetation in Upland Southern Pine Forests
DYNAMICAL CHARACTERISTICS OF UNDERGROWTH PLANT DIVERSITY IN CHINESE FIR PLANTATIONS
2 Canopy tree development and undergrowth bamboo 3 dynamics in old-growth Abies–Betula forests in 4 southwestern China: a 12-year s...
The Ecology of Lough Ine: IX. The Flora and Fauna Associated with Undergrowth-forming Algae in the Rapids Area
Effects of Thinning on the Growth and the Diversity of Undergrowth of Pinus tabulaeformis Plantation in Beijing Mountainous Areas
Regeneration process of climax beech forests I. Structure of a beech forest with the undergrowth of Sasa