undecomposed matter 未分解物质
undecomposed organic matter 未分解有机物
remain undecomposed 保持未分解状态
partially undecomposed 部分未分解
completely undecomposed 完全未分解
1. The soil contained undecomposed organic matter.
土壤中含有未分解的有机物。
2. Some parts of the plant remain undecomposed for months.
植物的某些部分数月仍未分解。
3. The sample was found in an undecomposed state.
该样本被发现时仍处于未分解状态。
4. Undecomposed materials can affect soil fertility.
未分解物质会影响土壤肥力。
A: Why is this material still undecomposed after so long?
A：为什么这种材料过了这么久仍未分解？
B: It may lack the conditions needed for decomposition.
B：可能是缺乏分解所需的条件。
1) 指未发生化学或生物分解的物质状态
2) 用于描述自然环境中未腐烂的有机物
3) 表示材料或物质保持原始结构未变化
1. 未分解的；未腐烂的
e.g.
The lake bottom contained undecomposed plant remains.
湖底含有未分解的植物残留物。
2. 未发生分解反应的
e.g.
The sample was still in an undecomposed state.
样品仍处于未分解状态。
adjective
1. Not decomposed; not broken down into simpler substances or components, especially in biological or chemical contexts.
Synonym: intact, unchanged, unbroken