单词	allophone
释义	allophone noun al·​lo·​phone ˈa-lə-ˌfōn  : one of two or more variants of the same phoneme the aspirated \\p\\ of pin and the unaspirated \\p\\ of spin are allophones of the phoneme \\p\\ allophonic ˌa-lə-ˈfä-nik  adjective Word History Etymology allo- + -phone entry 1 First Known Use 1938, in the meaning defined above
随便看	downcut downcycle downcycled downcycles downcycling downdale downdraft downdrafts downdraught downed downer downers Downers Grove downest Downey downface downfall downfallen downfalling downfalls downfaulted downfield downfielder downfieldest downflow

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