degenerate
/dɪˈdʒenəreɪt; dɪ`dʒɛnəˌret/ v[I, Ipr]
~ (from sth) (into sth) pass into a worse physical, mental or moral state than one which is considered normal or desirable （体力或精神）衰退; 堕落; 恶化
His health is degenerating rapidly. 他的健康状况迅速恶化.
Her commitment to a great cause degenerated from a crusade into an obsession. 她致力於一伟大事业, 但其崇高的奋斗精神已变质成为偏执的狂热.
degenerate / dɪˈdʒenərət; dɪ`dʒɛnərət/ adj having lost the physical, mental or moral qualities that are considered normal or desirable 衰弱的; 颓废的; 堕落的
a degenerate art, society, age 堕落的艺术、 社会、 时代. degeneracy/ dɪˈdʒenərəsɪ; dɪ`dʒɛnərəsɪ/ n [U]
(a) state of being degenerate 堕落; 恶化; 退化.
(b) process of becoming degenerate 堕落、 恶化、 退化的过程.
degenerate / dɪˈdʒenərət; dɪ`dʒɛnərət/ n degenerate person or animal 堕落的人; 退化的动物
This degenerate seduced my daughter! 这个道德败坏的人勾引我的女儿!