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vi. ˥�ˣ�˥�������ã�����
n. ˥�ˣ�˥�������ã�����
vt. ʹ���ã�ʹ���ܣ�ʹ˥�ˣ�ʹ˥��

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n. decline��decomposition��disintegration��radioactive decay
v. crumble��decompose��delapidate��disintegrate

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1. The tree began to decay as soon as it was cut down.
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2. I leave this prison of decay.
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3. One major problem is tooth decay.
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n.
  1. the process of gradually becoming inferior
  2. a gradual decrease; as of stored charge or current
  3. the organic phenomenon of rotting
  4. an inferior state resulting from the process of decaying
  5. the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiat
v.
  1. lose a stored charge, magnetic flux, or current
  2. fall into decay or ruin
  3. undergo decay or decomposition

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decay
˥��; ˥��; ˥��,��˥��; ����е�豸�ģ���ʴ;
decay constant
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decay curve
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decay analogue
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decay characteristic
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