那他是不是在哪里没信号了？
更让徐先生纳闷的是，房客的手机也打不通了。[{'character': '更', 'pinyin': 'geng4', 'highest pitch': 11.11, 'lowest pitch': 10.58, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '让', 'pinyin': 'rang4', 'highest pitch': 10.58, 'lowest pitch': 8.7, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '徐', 'pinyin': 'xv2', 'highest pitch': 8.7, 'lowest pitch': 7.53, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '先', 'pinyin': 'xian1', 'highest pitch': 9.42, 'lowest pitch': 7.53, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '生', 'pinyin': 'sheng5', 'highest pitch': 8.92, 'lowest pitch': 7.27, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '纳', 'pinyin': 'na4', 'highest pitch': 8.79, 'lowest pitch': 7.81, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '闷', 'pinyin': 'men4', 'highest pitch': 8.4, 'lowest pitch': 7.11, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 8.04, 'lowest pitch': 5.95, 'duration': 0.12, 'prosody hierarchy': 'null'}, {'character': '是', 'pinyin': 'shiii4', 'highest pitch': 13.49, 'lowest pitch': 5.98, 'duration': 0.27, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.28}, {'character': '房', 'pinyin': 'fang2', 'highest pitch': 8.35, 'lowest pitch': 7.03, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '客', 'pinyin': 'ke4', 'highest pitch': 10.01, 'lowest pitch': 7.56, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 8.04, 'lowest pitch': 7.55, 'duration': 0.1, 'prosody hierarchy': '#1'}, {'character': '手', 'pinyin': 'shou3', 'highest pitch': 7.91, 'lowest pitch': 5.11, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '机', 'pinyin': 'ji1', 'highest pitch': 10.44, 'lowest pitch': 9.17, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '也', 'pinyin': 'ie2', 'highest pitch': 10.44, 'lowest pitch': 7.61, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '打', 'pinyin': 'da3', 'highest pitch': 4.77, 'lowest pitch': 4.67, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '不', 'pinyin': 'bu4', 'highest pitch': 6.13, 'lowest pitch': 5.94, 'duration': 0.12, 'prosody hierarchy': '#1'}, {'character': '通', 'pinyin': 'tong1', 'highest pitch': 7.93, 'lowest pitch': 7.51, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '了', 'pinyin': 'le5', 'highest pitch': 7.58, 'lowest pitch': 5.04, 'duration': 0.25, 'prosody hierarchy': '#4'}]