VERB
(尸體或死去的植物）腐爛，腐朽，腐敗;(牙齒）遭蛀蝕
When something such as a dead body, a dead plant, or a tooth decays, it is gradually destroyed by a natural process.
例句
The bodies buried in the fine ash slowly decayed...
埋在灰燼里的尸體慢慢地腐爛了。
The ground was scattered with decaying leaves.
地上滿是腐敗的落葉。