时间: 2025-04-25 10:37:23
美: [dɪ'ke]
英: [dɪ'keɪ]
vi. 衰退,[核] 衰减;腐烂,腐朽
n. 衰退,[核] 衰减;腐烂,腐朽
vt. 使腐烂,使腐败;使衰退,使衰落
n. (Decay)人名;(法)德凯
最后更新时间:2025-04-25 10:37:23
词源分析:Decay 源自拉丁语“decadere”,其中“de-”意为“离开”,“cadere”意为“落下”。字面意思可以理解为“掉落”或“下降”。
历史背景:该词在英语中的首次使用可以追溯到14世纪,常用于描述生物的死亡、物质的腐烂等现象。
课本:在**的中学英语教材和高中生物教材中可能会提到该词,特别是在涉及生态学和环境科学的章节。美国的教材中,像《Oxford English Dictionary》及其相关的科学教材中也会使用这个词。
正式与非正式语境:
特殊场合:
The fruit began to decay after being left out for too long.
The scientists studied the decay of radioactive materials.
His enthusiasm for the project started to decay over time.
The old building has suffered from years of decay.
The decay of the forest ecosystem is alarming due to pollution.
同义词:
反义词:
通过以上内容,学生可以全面理解“decay”这个单词的含义、用法及其在不同语境中的应用。
[V-I] When something such as a dead body, a dead plant, or a tooth decays, it is gradually destroyed by a natural process. 腐坏
例:The bodies buried in the fine ash slowly decayed.埋在细灰里的尸体慢慢腐烂了。
[N-UNCOUNT] Decay is also a noun. 腐坏
例: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。
[ADJ] decayed 腐坏的
例: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。
[V-I] 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
例: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。
[N-UNCOUNT] Decay is also a noun. 衰败
例:There are problems of urban decay and gang violence.存在都市衰败和黑帮暴力问题。