这些车是干什么用的？
这是两辆面包车，都贴着“环卫监察”字样，车顶安装着喇叭。[{'character': '这', 'pinyin': 'zhe4', 'highest pitch': 10.08, 'lowest pitch': 9.34, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '是', 'pinyin': 'shiii4', 'highest pitch': 9.34, 'lowest pitch': 8.5, 'duration': 0.21, 'prosody hierarchy': '#1'}, {'character': '两', 'pinyin': 'liang3', 'highest pitch': 8.5, 'lowest pitch': 5.1, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '辆', 'pinyin': 'liang4', 'highest pitch': 8.76, 'lowest pitch': 5.94, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '面', 'pinyin': 'mian4', 'highest pitch': 9.33, 'lowest pitch': 7.9, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '包', 'pinyin': 'bao1', 'highest pitch': 9.44, 'lowest pitch': 8.36, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '车', 'pinyin': 'che1', 'highest pitch': 9.89, 'lowest pitch': 9.44, 'duration': 0.33, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.21}, {'character': '都', 'pinyin': 'dou1', 'highest pitch': 8.37, 'lowest pitch': 7.17, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '贴', 'pinyin': 'tie1', 'highest pitch': 8.5, 'lowest pitch': 7.12, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '着', 'pinyin': 'zhe5', 'highest pitch': 9.97, 'lowest pitch': 6.53, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '环', 'pinyin': 'huan2', 'highest pitch': 8.12, 'lowest pitch': 6.43, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '卫', 'pinyin': 'uei4', 'highest pitch': 9.7, 'lowest pitch': 7.39, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '监', 'pinyin': 'jian1', 'highest pitch': 10.61, 'lowest pitch': 7.39, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '察', 'pinyin': 'cha2', 'highest pitch': 10.58, 'lowest pitch': 6.02, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '字', 'pinyin': 'zii4', 'highest pitch': 7.06, 'lowest pitch': 6.42, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '样', 'pinyin': 'iang4', 'highest pitch': 6.74, 'lowest pitch': 4.16, 'duration': 0.24, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.28}, {'character': '车', 'pinyin': 'che1', 'highest pitch': 9.89, 'lowest pitch': 7.59, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '顶', 'pinyin': 'ding3', 'highest pitch': 8.26, 'lowest pitch': 5.52, 'duration': 0.23, 'prosody hierarchy': '#1'}, {'character': '安', 'pinyin': 'an1', 'highest pitch': 8.78, 'lowest pitch': 7.49, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '装', 'pinyin': 'zhuang1', 'highest pitch': 10.19, 'lowest pitch': 8.55, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '着', 'pinyin': 'zhe5', 'highest pitch': 9.97, 'lowest pitch': 8.83, 'duration': 0.09, 'prosody hierarchy': '#1'}, {'character': '喇', 'pinyin': 'la3', 'highest pitch': 13.86, 'lowest pitch': 6.89, 'duration': 0.28, 'prosody hierarchy': 'null'}, {'character': '叭', 'pinyin': 'ba5', 'highest pitch': 7.54, 'lowest pitch': 5.45, 'duration': 0.27, 'prosody hierarchy': '#4'}]