undergrowth
n. 林下灌丛，林下植物；发育不全；动物身上长在长毛下面的浓密绒毛
例句
We had to bushwhack through undergrowth.
我们只好在灌木丛中劈开一条路。
《牛津词典》
The tiger prowled through the undergrowth.
老虎悄然穿过矮树丛。
There was a sudden movement in the undergrowth.
矮树丛里突然有什么东西动了一下。
