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・the length of a vowel [syllable, musical note] 母音[音節, 音符]の長さ.🔗🔉

・the length of a vowel [syllable, musical note] 母音[音節, 音符]の長さ.

研究社新英和大辞典 ページ 201614 での・the length of a vowel [syllable, musical note] 母音[音節, 音符]の長さ.単語。