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erstwhile

美音:[´ə:s´twaıl ]点这儿播放单词美音发声
英音:[´ə:s´twaıl ]点这儿播放单词英音发声
adv.<古>以前,往昔地 adj.以前的,往昔的

难易程度:

erstwhile为短语/超纲词汇

erstwhile


adj [only before noun]formal
[Date: 1500-1600; Origin: erst 'formerly' (11-19 centuries) (from Old English Arest 'earliest') + while]
former or in the past
 She found herself ostracized by erstwhile friends.
 his erstwhile allies