Undergrowth is all the low, thick, tangled plant life that grows beneath the big trees in a wood or a forest — bushes, ferns, young saplings, creepers, long grass. It is an uncountable noun: you say 'thick undergrowth', 'through the undergrowth', never 'an undergrowth' or 'undergrowths'.

Undergrowth指的是 that grows beneath the big trees in a wood or a forest長在森林或樹林裡大樹底下 all the low, thick, tangled plant life那些低矮、濃密、糾結交纏的植物 — bushes, ferns, young saplings, creepers, long grass灌木、蕨類、小樹苗、藤蔓、長草。It它 is an uncountable noun是一個不可數名詞: you say你會說 'thick undergrowth''thick undergrowth'（濃密的灌木叢）, 'through the undergrowth''through the undergrowth'（穿過灌木叢）, never但絕不會說 'an undergrowth' or 'undergrowths''an undergrowth' 或 'undergrowths'。

The word carries a feeling as well as a fact. Undergrowth is usually described as something that gets in your way: it is dense, it hides things, you push through it, you lose a ball in it, an animal rustles somewhere inside it. Writers use it constantly for that reason — it is where the unseen thing is.

The word這個字 carries a feeling as well as a fact帶有一種感覺，不只是描述一個事實。Undergrowth is usually described as something that gets in your wayUndergrowth通常被形容成一種會擋路的東西: it is dense它很濃密, it hides things會把東西藏起來, you push through it你得推開它才能前進, you lose a ball in it球掉進去會找不到, an animal rustles somewhere inside it還有動物會在裡面窸窸窣窣地動。Writers作家 use it constantly for that reason常常因為這個原因一直用這個字 — it is where the unseen thing is那裡就是看不見的東西藏身的地方。

If a forest floor is open and easy to walk on, English does not really call it undergrowth; it becomes undergrowth when it is thick enough to slow you down or hide something.

If a forest floor is open and easy to walk on如果森林地面開闊、好走, English does not really call it undergrowth英文其實不太會叫它 undergrowth; it becomes undergrowth它才會變成 undergrowth when it is thick enough to slow you down or hide something要濃密到會拖慢你的腳步或藏住東西。

Gardeners and forestry workers use it plainly, without drama, for the layer of growth they need to clear.

Gardeners and forestry workers園丁和林業工作者 use it plainly, without drama會很平實地用這個字，沒有那種戲劇性 for the layer of growth they need to clear指他們得清除的那一層雜生植物。

Note that 'undergrowth' is about the layer as a whole, not one plant — if you want one plant you name it: 'a bush', 'a fern'.

Note that要注意 'undergrowth' is about the layer as a whole, not one plant'undergrowth' 講的是整層植物，不是單一一株 — if you want one plant you name it如果你要講單一一株，就直接叫它的名字: 'a bush', 'a fern''a bush'（一叢灌木）、'a fern'（一株蕨類）。

A near neighbour is 'underbrush' (more common in American English) and 'brush' for dry scrubby growth.

A near neighbour is意思相近的字有 'underbrush''underbrush' (more common in American English)（美式英文比較常用）, and 'brush' for dry scrubby growth還有指乾燥矮叢植物的 'brush'。