单词	ringtone
释义	ringtonering‧tone /ˈrɪŋtəʊn $ -toʊn/ noun [countable] the sound made by a telephone, especially a mobile phone, when someone is calling it
随便看	RTF Rt Hon RTLS Rt Rev rub rubber rubber band rubber boot rubber bullet rubber chicken circuit rubber dinghy rubberneck rubbernecker rubber plant rubber-stamp rubber stamp rubbery rubbing rubbing alcohol rubbish rubbishy rubble rubdown rube Rube Goldberg

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