ʃiː wʌzðə fˈɜːst wˈʊmən ɪn hˈɪstɚɹi tə ɡˌoʊ ˌʌndɚ ðə twˈɛnti fˈaɪvsˈɛkəndz bˈæɹiɚɹ ɪnðə fˈɪfti ˈɛm fɹˈiːstaɪl wɛn ʃiː wʌz twˈɛnti jˈɪɹz ˈoʊld.
She was the first woman in history to go under the 25-seconds barrier in the 50m freestyle when she was 20 years old.