我们需要找出问题所在。
没有人发牢骚，而是铆足劲，着手整改。[{'character': '没', 'pinyin': 'mei2', 'highest pitch': 9.51, 'lowest pitch': 8.47, 'duration': 0.1, 'prosody hierarchy': 'null'}, {'character': '有', 'pinyin': 'iou3', 'highest pitch': 11.69, 'lowest pitch': 9.3, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '人', 'pinyin': 'ren2', 'highest pitch': 9.3, 'lowest pitch': 7.19, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '发', 'pinyin': 'fa1', 'highest pitch': 8.91, 'lowest pitch': 7.62, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '牢', 'pinyin': 'lao2', 'highest pitch': 8.34, 'lowest pitch': 5.72, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '骚', 'pinyin': 'sao5', 'highest pitch': 8.63, 'lowest pitch': 6.29, 'duration': 0.28, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.23}, {'character': '而', 'pinyin': 'er2', 'highest pitch': 6.87, 'lowest pitch': 6.33, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '是', 'pinyin': 'shiii4', 'highest pitch': 8.45, 'lowest pitch': 7.72, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '铆', 'pinyin': 'mao3', 'highest pitch': 7.76, 'lowest pitch': 4.44, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '足', 'pinyin': 'zu2', 'highest pitch': 6.57, 'lowest pitch': 5.94, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '劲', 'pinyin': 'jin4', 'highest pitch': 9.54, 'lowest pitch': 6.61, 'duration': 0.25, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.09}, {'character': '着', 'pinyin': 'zhuo2', 'highest pitch': 9.75, 'lowest pitch': 8.08, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '手', 'pinyin': 'shou3', 'highest pitch': 9.75, 'lowest pitch': 5.44, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '整', 'pinyin': 'zheng2', 'highest pitch': 9.74, 'lowest pitch': 5.44, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '改', 'pinyin': 'gai3', 'highest pitch': 9.74, 'lowest pitch': 3.8, 'duration': 0.29, 'prosody hierarchy': '#4'}]