天气预报说下雪了，我们需要做好应对措施。
北京市市政市容委及时启动扫雪铲冰应急预案。[{'character': '北', 'pinyin': 'bei3', 'highest pitch': 8.27, 'lowest pitch': 6.97, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '京', 'pinyin': 'jing1', 'highest pitch': 10.89, 'lowest pitch': 6.97, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '市', 'pinyin': 'shiii4', 'highest pitch': 10.88, 'lowest pitch': 8.53, 'duration': 0.31, 'prosody hierarchy': '#2'}, {'character': '市', 'pinyin': 'shiii4', 'highest pitch': 10.88, 'lowest pitch': 8.75, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '政', 'pinyin': 'zheng4', 'highest pitch': 10.33, 'lowest pitch': 8.92, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '市', 'pinyin': 'shiii4', 'highest pitch': 10.88, 'lowest pitch': 9.31, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '容', 'pinyin': 'rong2', 'highest pitch': 10.44, 'lowest pitch': 7.98, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '委', 'pinyin': 'uei3', 'highest pitch': 10.38, 'lowest pitch': 3.89, 'duration': 0.27, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.06}, {'character': '及', 'pinyin': 'ji2', 'highest pitch': 8.25, 'lowest pitch': 7.58, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '时', 'pinyin': 'shiii2', 'highest pitch': 8.22, 'lowest pitch': 8.11, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '启', 'pinyin': 'qi3', 'highest pitch': 7.6, 'lowest pitch': 5.82, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '动', 'pinyin': 'dong4', 'highest pitch': 8.12, 'lowest pitch': 5.51, 'duration': 0.26, 'prosody hierarchy': '#2'}, {'character': '扫', 'pinyin': 'sao2', 'highest pitch': 9.49, 'lowest pitch': 6.51, 'duration': 0.28, 'prosody hierarchy': 'null'}, {'character': '雪', 'pinyin': 'xve2', 'highest pitch': 9.57, 'lowest pitch': 8.91, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '铲', 'pinyin': 'chan3', 'highest pitch': 9.45, 'lowest pitch': 4.74, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '冰', 'pinyin': 'bing1', 'highest pitch': 10.01, 'lowest pitch': 8.37, 'duration': 0.29, 'prosody hierarchy': '#2'}, {'character': '应', 'pinyin': 'ing4', 'highest pitch': 10.57, 'lowest pitch': 8.25, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '急', 'pinyin': 'ji2', 'highest pitch': 8.25, 'lowest pitch': 7.26, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '预', 'pinyin': 'v4', 'highest pitch': 9.88, 'lowest pitch': 8.22, 'duration': 0.13, 'prosody hierarchy': 'null'}, {'character': '案', 'pinyin': 'an4', 'highest pitch': 10.37, 'lowest pitch': 6.54, 'duration': 0.24, 'prosody hierarchy': '#4'}]