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- In 1946, Purcell suggested that the spontaneous decay can be changed when placing the atom into a cavity. 以前，人们认为自发辐射是原子固有的性质而对这一问题束手无策，直到1946年Purcell指出，把原子放置在腔中，将显著改变原子的自发辐射。
- What made the Roman Empire decay? 罗马帝国为何衰亡？
- He is spontaneous to offer help. 他主动提供帮助。
- Old civilization may fall into decay. 古老的文化可能会渐渐衰落下去。
- The empty house has fallen into decay. 那座空房已成一片颓垣。
- The tree exhibited signs of decay. 那棵树显示腐蛀的迹象。
- Natural, spontaneous verbal utterance. 自然的、朴素的语言发声
- She shows a spontaneous gaiety of manner. 她露出天真愉快的神态。
- His mental decay is distressing. 他的智力衰退令人苦恼。
- Growth and decay are vital processes. 生长和衰亡是生命过程。
- The dentist could detect no decay in her teeth. 牙医检查了她的牙，未见有龋齿。
- Cavities in teeth are caused by decay. 牙齿的蛀洞是由蛀蚀造成的。
- My husband was handsome, spontaneous and charming in his youth. 我丈夫年轻时英俊、诚挚、富有魅力。
- Human remains, especially after cremation or decay. 骨灰人的遗骸，尤指在火化或腐烂后
- spontaneous decay 自发衰减
- Spontaneous fellowship and sympathy among a number of people. 本能的友情一群人自然产生的友谊和同情
- A source of spreading corruption or decay. 腐败的原因传布腐败或腐朽的根源
- Breakdown or decay of organic materials. 腐烂; 分解指有机物的分解或腐败
- Hearing the joke, we burst into spontaneous laughter. 听到笑话，我们不由自主地大笑起来。
- In truth, moral decay hastened the decline of the Roman Empire. 事实上，道德沦丧加速了罗马帝国的衰亡。
