ebbed [ebd]

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附加级

（指潮水）退( ebb的过去式和过去分词 )；落；减少；衰落

But the pain had ebbed away and the trembling had stopped. 不过这次痛已减退，寒战也停止了。
But gradually his interest in good causes ebbed away. 不过后来他对这类事业兴趣也逐渐淡薄了。