decay
[NOUN, VERB]
1. [U 不可数名词] 腐坏
Decay is the natural process by which something such as a dead body, a dead plant, or a tooth is gradually destroyed.
近义词
双语例句
例：When not removed, plaque causes tooth decay and gum disease.
牙斑如果不清除就会导致蛀牙和牙龈疾病。
例：Radon is produced by the radioactive decay of uranium.
氡是铀放射衰变产生的。
2. [U 不可数名词] 衰败
Decay is the process by which something such as a society, system, or institution gradually becomes weaker or its condition gradually gets worse.
反义词
双语例句
例：There are problems of urban decay and gang violence.
存在都市衰败和黑帮暴力问题。
NOUN. 名词
decays , decaying , decayed
1. [I 不及物动词] 腐坏
When something such as a dead body, a dead plant, or a tooth decays, it is gradually destroyed by a natural process.
近义词
rot
双语例句
例：The bodies buried in the fine ash slowly decayed.
埋在细灰里的尸体慢慢腐烂了。
2. [I 不及物动词] （社会、制度或机构）衰败
If something such as a society, system, or institution decays, it gradually becomes weaker or its condition gets worse.
双语例句
例：In practice, the agency system has decayed. Most 'agents' now sell only to themselves or their immediate family.
实际上，这种代理制已经衰落。如今，大多数“代理人”都只把产品卖给自己或亲近的家人。
VERB. 动词
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