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-F23: Failure of 1.4.2 due to playing a sound longer than 3 seconds where there is no mechanism to turn it off | WAI | W3C
+F23: 達成基準 1.4.2 の失敗例 - 3 秒よりも長く音声を再生していて、音声を止めるメカニズムがない| WAI | W3C
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