"我们需要找出发生这个问题的原因。"
他要求要认真吸取教训，查找原因。[{'character': '他', 'pinyin': 'ta1', 'highest pitch': 9.8, 'lowest pitch': 9.09, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '要', 'pinyin': 'iao1', 'highest pitch': 9.52, 'lowest pitch': 8.77, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '求', 'pinyin': 'qiou2', 'highest pitch': 8.77, 'lowest pitch': 6.69, 'duration': 0.32, 'prosody hierarchy': '#2'}, {'character': '要', 'pinyin': 'iao4', 'highest pitch': 9.65, 'lowest pitch': 7.75, 'duration': 0.25, 'prosody hierarchy': '#1'}, {'character': '认', 'pinyin': 'ren4', 'highest pitch': 10.71, 'lowest pitch': 8.1, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '真', 'pinyin': 'zhen1', 'highest pitch': 10.47, 'lowest pitch': 8.1, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '吸', 'pinyin': 'xi1', 'highest pitch': 10.59, 'lowest pitch': 10.26, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '取', 'pinyin': 'qv3', 'highest pitch': 10.4, 'lowest pitch': 6.03, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '教', 'pinyin': 'jiao4', 'highest pitch': 9.93, 'lowest pitch': 6.03, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '训', 'pinyin': 'xvn4', 'highest pitch': 7.77, 'lowest pitch': 6.04, 'duration': 0.24, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.05}, {'character': '查', 'pinyin': 'cha2', 'highest pitch': 7.3, 'lowest pitch': 6.41, 'duration': 0.28, 'prosody hierarchy': 'null'}, {'character': '找', 'pinyin': 'zhao3', 'highest pitch': 9.09, 'lowest pitch': 5.73, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '原', 'pinyin': 'van2', 'highest pitch': 6.95, 'lowest pitch': 5.48, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '因', 'pinyin': 'in1', 'highest pitch': 9.47, 'lowest pitch': 6.95, 'duration': 0.31, 'prosody hierarchy': '#4'}]