degradation of [noun]
The degradation of the soil is a serious problem.
土壤退化是一个严重的问题。
降格，堕落，退化
降低等级、品格或声誉的行为；等级、品格或声誉降低的状态；强度、效力或价值的减少或降低；由于水、霜等作用导致的逐渐磨损或消耗；材料化学结构、物理性质或外观的有害变化
changing to a lower state (a less respected state)
降低等级、品格或声誉的行为
The act of reducing in rank, character, or reputation, or of abasing; a lowering from one's standing or rank in office or society
等级、品格或声誉降低的状态
The state of being reduced in rank, character, or reputation; baseness; moral, physical, or intellectual degeneracy; disgrace; abasement; debasement.
强度、效力或价值的减少或降低
Diminution or reduction of strength, efficacy, or value; degeneration; deterioration.
由于水、霜等作用导致的逐渐磨损或消耗
A gradual wearing down or wasting, as of rocks and banks, by the action of water, frost etc.
材料化学结构、物理性质或外观的有害变化
A deleterious change in the chemical structure, physical properties or appearance of a material from natural or artificial exposure.
表现出退化形式的物种或群体的状态
The state or condition of a species or group which exhibits degraded forms; degeneration.
任何器官或整个身体的发育停止或退化
Arrest of development, or degeneration of any organ, or of the body as a whole.
材料成分因自然元素逐渐分解
The gradual breakdown of components of a material, as a result of a natural element, i.e.: heat, cold and wind.
The degradation of the environment is a major concern for scientists.
环境退化是科学家们主要关注的问题。
用法提示：degradation在此句中表示“退化”，用作不可数名词。
He was deeply troubled by the moral degradation he witnessed in the city.
他对在城市中目睹的道德堕落深感不安。
用法提示：degradation在此句中表示“堕落”，用作不可数名词。
The castle's degradation over the centuries was clearly visible.
几个世纪以来城堡的破败清晰可见。
用法提示：degradation在此句中表示“破败”（退化义），用作不可数名词。
The degradation of the soil is a serious problem.
土壤退化是一个严重的问题。
常用形容词包括environmental, moral, urban等。
Environmental degradation affects everyone.
环境退化影响到每个人。
常见动词有cause, lead to, suffer, prevent等。
Pollution causes degradation of ecosystems.
污染导致生态系统退化。
The building is in a state of degradation.
这座建筑处于退化状态。
更强调状态变差，常用于事物质量或状况
侧重从较好状态向较差状态变化，生物学也常用
强调逐渐变弱，使用范围更广
特指道德上的败坏，常用于人或组织
强调腐坏分解，用于物质或制度
grammar · medium
易错句子The quality has degradation.
正确表达The quality has degraded.
degradation 是名词，不能直接跟在助动词 has 后面作谓语；应用动词 degrade 的过去分词形式表示‘已经退化’。
grammar · medium
易错句子There is a degradation to the environment.
正确表达There is a degradation of the environment.
表示‘对…的退化’时，英语使用介词 of，而不是 to，这是固定搭配。
指状态或品质向好的方向变化
指地位或水平的上升
指系统或设备的更新改进
指发展或晋升
指回到原先较好的状态
拼写和发音相近，但graduation指完成学业，degradation指降级或退化。
degradation强调等级或质量的下降，decomposition强调物质结构的分解。
demotion特指职位或等级的降低，degradation更广泛，可指道德、环境或质量的退化。
环境退化
Deforestation leads to environmental degradation.
森林砍伐导致环境退化。
道德沦丧
The novel depicts the moral degradation of society.
这部小说描绘了社会的道德沦丧。
质量下降
The degradation of quality is due to cheaper materials.
质量下降是由于使用了更便宜的材料。
性能退化
The degradation of performance was caused by overheating.
性能退化是由过热引起的。
土壤退化
Soil degradation threatens agricultural productivity.
土壤退化威胁着农业生产力。
ation
ation
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de- + grad + -ation
de- + grade
grad + -ual
de- + crease (grow)
creat(e) + -ion
环境退化常伴随污染
道德或制度退化常指腐败
物理或地质退化过程
逐渐变坏的过程，与退化同属下降变化
滥用导致系统或人的退化
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.