decayKK [dɪˋke] /dɪˈkeɪ/發音名詞1腐爛、腐壞The smell of decay came from the pile of fallen fruit.那堆落果散發出腐爛的味道。2衰敗、沒落、破敗Years of neglect left the old theater in a state of decay.多年無人管理，讓這座老劇院顯得破敗不堪。3蛀蝕、蛀牙多指牙齒Regular brushing helps prevent tooth decay in children.定期刷牙有助於預防兒童蛀牙。4衰變、衰減物理Scientists measure the decay of radioactive material over time.科學家測量放射性物質隨時間的衰變。動詞1腐爛、腐壞、腐化Leaves decay quickly in warm, wet weather.在溫暖潮濕的天氣裡，落葉很快就會腐爛。2衰敗、衰退、沒落The industrial district slowly decayed after the factories closed.工廠關閉後，這個工業區逐漸衰敗。3衰變、衰減物理The isotope decays into a more stable element.這種同位素會衰變成較穩定的元素。