单词	triphthong
释义	triphthong noun triph·​thong ˈtrif-ˌthȯŋ  ˈtrip- 1 : a phonological unit consisting of three successive vocalic sounds in one syllable 2 : trigraph triphthongal trif-ˈthȯŋ-gəl  trip- -əl adjective Word History Etymology tri- + -phthong (as in diphthong) First Known Use circa 1599, in the meaning defined at sense 1
随便看	do someone a favor do someone a lot of good do someone a power of good do someone a service do someone a world of good do someone no service do someone or something an injustice do someone the honor do someone wrong do someone's bidding do someone's shopping do something do something about do something to do something with do tell do the bidding of someone do the honor do the honors do the job do the laundry do the necessary do the rounds do the same do the trick

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