vi. 1.朽，腐烂。 2.衰减，衰退。 3.凋谢，枯。 vt. 使朽坏；使衰退。 n. 1.衰微，衰退。 2.朽，腐烂。 3.【无线电】衰变。 短语和例子 tooth decay 蛀牙。 be far gone in decay 衰弱过甚，凋落不堪。 go to decay ＝ fall into decay 腐朽，凋谢，衰微。
the organic phenomenon of rotting 同义词：decomposition,
a gradual decrease; as of stored charge or current 同义词：decline,
the process of gradually becoming inferior
the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation 同义词：radioactive decay, disintegration,
an inferior state resulting from the process of decaying; "the corpse was in an advanced state of decay"; "the house had fallen into a serious state of decay and disrepair"
fall into decay or ruin; "The unoccupied house started to decay" 同义词：crumble, dilapidate,
lose a stored charge, magnetic flux, or current; "the particles disintegrated during the nuclear fission process" 同义词：disintegrate, decompose,
undergo decay or decomposition; "The body started to decay and needed to be cremated"
例句与用法
1.
Cavities in teeth are caused by decay . 牙齿上的空洞是由龋蚀造成的。
2.
The theory of alpha decay utilizes this model . 衰变理论用了这种模型。
3.
Further energy is given off in their decays . 在它们蜕变时又放出一些能量。
4.
Otherwise, decay process is forbidden . 如果不是这样，就不会发生这样的衰变。
5.
All my decay has taken place upon a child . 我所有的毛病都源出于我的孩子气。
6.
No connection between simplicity and decay appears . 基本性与衰变之间没有联系。
7.
An odor of decay killed the fragrance of early spring . 腐烂的气味驱散了早春的芳香。
8.
The parent uranium has been partitioned from its decay products . 铀母体与其衰变产物分离。
9.
Some utensils were in a state of decay when they were unearthed . 有些器皿在出土时已经残破。
10.
Each civilization is born, it culminates, and it decays . 各种文明都要经历诞生、鼎盛和衰亡。
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