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		ail AHD[āl] D.J.[eɪl]K.K.[el]v.(动词)ailed, ail.ing, ails v.intr.(不及物动词)- To feel ill or have pain.使受病痛:感到不舒服或有疼痛
  v.tr.(及物动词)- To cause physical or mental pain or uneasiness to; trouble.See Synonyms at trouble 使痛苦:使…受身体或精神的痛苦或忧虑;使苦恼 参见 trouble
 
 - Middle English eilen 中古英语 eilen 
 
 - from Old English eglian 源自 古英语 eglian 
 
 - from egle [troublesome] 源自 egle [麻烦的,令人烦恼的] 
 
 
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