Gradual decomposition of organic matter; rot.

• Damage such as tooth decay caused by rot.

有机物的逐渐分解；腐烂。

• 如龋齿等因腐烂造成的损坏。

Deterioration in condition, quality, or morals.

• Loss of power, prosperity, or status.

状况、质量或道德的衰退。

• 权力、繁荣或地位的丧失。

To rot or decompose.

• To go bad, especially food or wood.

腐烂或分解。

• 变质，尤指食物或木材。

To deteriorate in quality, health, or strength.

• To decline morally, socially, or culturally.

质量、健康或力量下降。

• 在道德、社会或文化方面衰败。

The spontaneous disintegration of an unstable nucleus with radiation.

• Change of a particle by emitting or capturing subatomic particles.

不稳定原子核自发放射并解体的过程。

• 粒子通过发射或俘获亚原子粒子的变化。

A gradual decrease of signal, charge, current, or intensity.

• Reduction over time of amplitude, flux, or brightness.

信号、电荷、电流或强度的逐渐减弱。

• 振幅、磁通或亮度随时间降低。