英文原文：
thirteen fourteen fifteen sixteen seventeen eighteen nineteen
英式音标：
[θɜːˈtiːn; ˈθɜːtiːn] [fɔːˈtiːn; ˈfɔːtiːn] [fɪfˈtiːn; ˈfɪftiːn] [sɪksˈtiːn; ˈsɪkstiːn] [sev(ə)nˈtiːn; ˈsev(ə)ntiːn] [eɪˈtiːn; ˈeɪtiːn] [naɪnˈtiːn; ˈnaɪntiːn]
美式音标：yinbiao5.com
[ˈθɝˈtin] [ˌfɔrˈtin] [ˌfɪfˈtin] [ˌsɪksˈtin] [ˌsɛvnˈtin] [ˌeˈtin] [ˌnaɪnˈtin]
