"F" => "f", # f - Lower-case F <fee> voiceless labiodental fricative ... "R" => "\311\271", # ɹ - Turned R <read> voiced alveolar approximate. ... <看更多>
labiodental r 在 I pronounce initial R's with my upper teeth on the very bottom ... 的推薦與評價
It sounds like you're describing a labiodental approximant [ʋ]. That sound is documented to occur as a pronunciation of /r/ for some English speakers, ... ... <看更多>
labiodental r 在 Labiodental /r/ - YouTube 的推薦與評價
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