单词	undertail
释义	undertail adjective : lying or extending under the tail undertail wing coverts Word History Etymology under entry 2 + tail, noun
随便看	on-the-job on-the-job training on-year on/as a lark on/at first acquaintance on/at the point of (doing something) on/at the receiving end on/at the threshold on/off one's back on/under false pretenses on/under/with the assumption on/upon impact on/upon reflection Ona onager onagers onagra Onagraceae onagraceaes onagraceous onanism onanisms onanistic onanists onas

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