那我们必须尽快找到一种有效的药物治疗心肌梗死。
但当患者离开医院后就心肌梗死，再回来时，已经无药可救了。[{'character': '但', 'pinyin': 'dan4', 'highest pitch': 10.56, 'lowest pitch': 8.69, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '当', 'pinyin': 'dang1', 'highest pitch': 10.69, 'lowest pitch': 8.69, 'duration': 0.25, 'prosody hierarchy': '#2'}, {'character': '患', 'pinyin': 'huan4', 'highest pitch': 11.69, 'lowest pitch': 9.05, 'duration': 0.27, 'prosody hierarchy': 'null'}, {'character': '者', 'pinyin': 'zhe3', 'highest pitch': 9.08, 'lowest pitch': 6.06, 'duration': 0.11, 'prosody hierarchy': '#1'}, {'character': '离', 'pinyin': 'li2', 'highest pitch': 6.86, 'lowest pitch': 5.72, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '开', 'pinyin': 'kai1', 'highest pitch': 10.06, 'lowest pitch': 6.86, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '医', 'pinyin': 'i1', 'highest pitch': 10.42, 'lowest pitch': 9.74, 'duration': 0.1, 'prosody hierarchy': 'null'}, {'character': '院', 'pinyin': 'van4', 'highest pitch': 11.18, 'lowest pitch': 8.67, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '后', 'pinyin': 'hou4', 'highest pitch': 8.82, 'lowest pitch': 6.92, 'duration': 0.24, 'prosody hierarchy': '#2'}, {'character': '就', 'pinyin': 'jiou4', 'highest pitch': 7.86, 'lowest pitch': 6.59, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '心', 'pinyin': 'xin1', 'highest pitch': 8.31, 'lowest pitch': 7.62, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '肌', 'pinyin': 'ji1', 'highest pitch': 8.58, 'lowest pitch': 7.52, 'duration': 0.14, 'prosody hierarchy': '#1'}, {'character': '梗', 'pinyin': 'geng2', 'highest pitch': 8.23, 'lowest pitch': 6.13, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '死', 'pinyin': 'sii3', 'highest pitch': 6.49, 'lowest pitch': 3.02, 'duration': 0.29, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.29}, {'character': '再', 'pinyin': 'zai4', 'highest pitch': 10.95, 'lowest pitch': 9.86, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '回', 'pinyin': 'huei2', 'highest pitch': 9.86, 'lowest pitch': 6.43, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '来', 'pinyin': 'lai5', 'highest pitch': 10.64, 'lowest pitch': 6.7, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '时', 'pinyin': 'shiii2', 'highest pitch': 8.93, 'lowest pitch': 6.27, 'duration': 0.27, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.21}, {'character': '已', 'pinyin': 'i3', 'highest pitch': 8.47, 'lowest pitch': 6.12, 'duration': 0.13, 'prosody hierarchy': 'null'}, {'character': '经', 'pinyin': 'jing1', 'highest pitch': 9.44, 'lowest pitch': 6.12, 'duration': 0.23, 'prosody hierarchy': '#2'}, {'character': '无', 'pinyin': 'u2', 'highest pitch': 9.44, 'lowest pitch': 6.96, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '药', 'pinyin': 'iao4', 'highest pitch': 11.11, 'lowest pitch': 8.9, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '可', 'pinyin': 'ke3', 'highest pitch': 8.9, 'lowest pitch': 5.49, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '救', 'pinyin': 'jiou4', 'highest pitch': 7.86, 'lowest pitch': 5.49, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '了', 'pinyin': 'le5', 'highest pitch': 6.06, 'lowest pitch': 4.77, 'duration': 0.18, 'prosody hierarchy': '#4'}]