英 [dɪˈkeɪd] 美 [dɪˈkeɪd]
adj. 腐烂的；腐败的；衰退的
v. 腐烂；衰退（decay 的过去分词）
decay /dɪˈkeɪ/ CET4 TEM4 [ decaying decayed decays ]
不及物动词 When something such as a dead body, a dead plant, or a tooth decays, it is gradually destroyed by a natural process. 腐坏
The bodies buried in the fine ash slowly decayed.
埋在细灰里的尸体慢慢腐烂了。
不可数名词 Decay is also a noun. 腐坏
When not removed, plaque causes tooth decay and gum disease.
牙斑没有清除就会导致蛀牙和牙龈疾病。
形容词 腐坏的
Even young children have teeth so decayed they need to be pulled.
连幼儿也有这么严重的龋齿，需要拔掉。
不及物动词 If something such as a society, system, or institution decays, it gradually becomes weaker or its condition gets worse. (社会、制度或机构) 衰败
In practice, the agency system has decayed. Most "agents" now sell only to themselves or their immediate family.
实际上，这种代理制已经衰退。现在，大多数“代理人”都只把产品卖给自己或亲近的家人。
不可数名词 Decay is also a noun. 衰败
There are problems of urban decay and gang violence.
存在都市衰败和黑帮暴力问题。
腐朽材-引用次数：2
腐朽术
腐朽
腐烂-引用次数：63
Moreover, postharvest Imazalil treatments also decreased decay of stored fruit and at 250ppm the result was better.
此外，Imazalil采后处理也能有效减少低温贮藏期间杏腐烂率，以250ppm处理效果较好。
腐烂-引用次数：64
High concentration of 1-MCP (2 M 1/L) treatment, however, inhibited PAL, POD activities during the later period of storage, thereby increasing decay incidence.4.
但高浓度（2μl／L）1-MCP处理，降低了菜用大豆贮藏后期的PAL、POD活性，使豆荚中木质素积累受抑，降低了豆荚抗病能力，导致豆荚褐腐病发生的增加 4、研究了不同浓度茉莉酸甲酯（MJ）处理对菜用大豆贮藏期间腐烂和衰老的影响。
参考来源菜用大豆采后生理及其保鲜技术研究
裂变
衰变
衰变-引用次数：9
The diffrence includes: the decay of two solitons is not synchronous, and two lower(higher) amplitude fundamental solitons are not totally alike.
衰变规律的不同主要表现在：两个二阶孤子并不是同时衰变，衰变后两个小(大)振幅基孤子并不完全相同。
参考来源单模光纤中二阶孤子间相互作用研究
衰减-引用次数：76
We derived learning rates for the least-square regression and density estimation on bounded domains under some decay conditions near the boundary on the marginal distribution of the probability measure for sampling.
当边缘分布函数在采样的定义域附近满足一定的衰减性条件,我们给出了最小平方形式下的回归函数和密度估计函数的学习率。
衰退-引用次数：4
The decay rate of the corresponding strong solution at infinity is also given for some kinds of initial data with exponential decay.
若其初值以指数方式衰退,且空间可微,则此强解在之后的时间内也将以指数方式衰退。
参考来源一类浅水波方程的研究
衰变-引用次数：2
衰落-引用次数：14
参考来源明代礼乐制度与乐章体词曲
衰减-引用次数：27
(运行中的人造卫星)能量消减：
(运行中的人造地球卫星的)能量消减；(轨道的)衰微，劣化
腐朽
衰变
腐败
蜕变;腐败
腐蚀;余辉
衰变
衰减
衰变
... 沮丧失望〖dejected;despirited〗 衰败〖decayed〗 残疾的〖disabled〗 ...
The bodies buried in the fine ash slowly decayed.
埋在细灰里的尸体慢慢腐烂了。
In practice, the agency system has decayed. Most "agents" now sell only to themselves or their immediate family.
实际上，这种代理制已经衰退。现在，大多数“代理人”都只把产品卖给自己或亲近的家人。
If the body has only partially decayed, it is reburied in a smaller cheaper grave, but not for long, the body will be dug up again some time later when it has fully decayed.
如果尸体没有完全腐烂，尸体会被重新埋在一个较小较廉价的墓地中，不久后，当尸体完全腐烂时，就会被再次挖出来。
The Okefenokee,which is already nearly choked with plants, would probably fill in,dry up, and become just another cypress and pine forest were it not for range fires that come along every once in awhile and burn out decayed vegetation.
VOA : standard.2010.03.29
It's providing a means of deciding where the gum has decayed.
提供了决定牙周炎在哪恶化的手段。
死亡课程节选 : 耶鲁公开课
Think about how the world has decayed, since those days.
想想世界是怎样堕落的,从人们开始喝酒起
古希腊历史简介课程节选 : 耶鲁公开课
The old production sistems have decayed and collapsed, new ones exist mainly as window dressing.
FORBES: Mikhail Prokhorov, Right-Cause, and a new Challenge to Putin and the Kremlin
And over time, if traditional Medicare has decayed or fallen apart, then they're stuck.
She praised the HP Way to the ranks but felt that it had decayed into consensus management.