哦，他们终于开始安装铁栅栏了。
昨日，昌平区史各庄村，村口、沿街正在安装铁栅栏。[{'character': '昨', 'pinyin': 'zuo2', 'highest pitch': 8.49, 'lowest pitch': 7.54, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '日', 'pinyin': 'riii4', 'highest pitch': 9.09, 'lowest pitch': 6.95, 'duration': 0.24, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.17}, {'character': '昌', 'pinyin': 'chang1', 'highest pitch': 11.05, 'lowest pitch': 10.56, 'duration': 0.28, 'prosody hierarchy': 'null'}, {'character': '平', 'pinyin': 'ping2', 'highest pitch': 11.05, 'lowest pitch': 8.11, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '区', 'pinyin': 'qv1', 'highest pitch': 9.71, 'lowest pitch': 8.45, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '史', 'pinyin': 'shiii3', 'highest pitch': 9.71, 'lowest pitch': 5.61, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '各', 'pinyin': 'ge5', 'highest pitch': 6.01, 'lowest pitch': 5.89, 'duration': 0.13, 'prosody hierarchy': 'null'}, {'character': '庄', 'pinyin': 'zhuang1', 'highest pitch': 9.44, 'lowest pitch': 8.35, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '村', 'pinyin': 'cuen1', 'highest pitch': 10.94, 'lowest pitch': 8.99, 'duration': 0.3, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.1}, {'character': '村', 'pinyin': 'cuen1', 'highest pitch': 10.94, 'lowest pitch': 10.16, 'duration': 0.27, 'prosody hierarchy': 'null'}, {'character': '口', 'pinyin': 'kou3', 'highest pitch': 10.94, 'lowest pitch': 5.06, 'duration': 0.28, 'prosody hierarchy': '#2'}, {'character': '沿', 'pinyin': 'ian2', 'highest pitch': 6.96, 'lowest pitch': 5.4, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '街', 'pinyin': 'jie1', 'highest pitch': 10.42, 'lowest pitch': 6.96, 'duration': 0.27, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.06}, {'character': '正', 'pinyin': 'zheng4', 'highest pitch': 10.05, 'lowest pitch': 7.27, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '在', 'pinyin': 'zai4', 'highest pitch': 8.17, 'lowest pitch': 6.94, 'duration': 0.13, 'prosody hierarchy': '#1'}, {'character': '安', 'pinyin': 'an1', 'highest pitch': 8.23, 'lowest pitch': 7.46, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '装', 'pinyin': 'zhuang1', 'highest pitch': 9.44, 'lowest pitch': 8.08, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '铁', 'pinyin': 'tie3', 'highest pitch': 8.16, 'lowest pitch': 4.55, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '栅', 'pinyin': 'zha4', 'highest pitch': 10.69, 'lowest pitch': 4.61, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '栏', 'pinyin': 'lan5', 'highest pitch': 9.47, 'lowest pitch': 4.84, 'duration': 0.3, 'prosody hierarchy': '#4'}]