英文原文：
A boy sleeps over nineteen hours every night.
英式音标：
[ə; eɪ] [bɒɪ] [sliːp] [ˈəʊvə] [naɪnˈtiːn; ˈnaɪntiːn] [ˈaʊəz] [ˈevrɪ] [naɪt] .
美式音标：
[e] [bɔɪ] [sliːp] [ˈovə] [ˌnaɪnˈtin] [ˈaʊəz] [ˈɛvri] [naɪt] .
英文原文：
A boy sleeps over nineteen hours every night.
英式音标：
[ə; eɪ] [bɒɪ] [sliːp] [ˈəʊvə] [naɪnˈtiːn; ˈnaɪntiːn] [ˈaʊəz] [ˈevrɪ] [naɪt] .
美式音标：
[e] [bɔɪ] [sliːp] [ˈovə] [ˌnaɪnˈtin] [ˈaʊəz] [ˈɛvri] [naɪt] .