你为什么不回答我的问题？
徐若瑄尴尬低头笑而不答。[{'character': '徐', 'pinyin': 'xv2', 'highest pitch': 8.89, 'lowest pitch': 8.52, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '若', 'pinyin': 'ruo4', 'highest pitch': 10.03, 'lowest pitch': 8.17, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '瑄', 'pinyin': 'xvan1', 'highest pitch': 9.51, 'lowest pitch': 8.17, 'duration': 0.31, 'prosody hierarchy': '#2'}, {'character': '尴', 'pinyin': 'gan1', 'highest pitch': 10.45, 'lowest pitch': 10.09, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '尬', 'pinyin': 'ga4', 'highest pitch': 10.6, 'lowest pitch': 7.76, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '低', 'pinyin': 'di1', 'highest pitch': 8.51, 'lowest pitch': 8.29, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '头', 'pinyin': 'tou2', 'highest pitch': 8.29, 'lowest pitch': 5.66, 'duration': 0.28, 'prosody hierarchy': '#2'}, {'character': '笑', 'pinyin': 'xiao4', 'highest pitch': 10.53, 'lowest pitch': 7.12, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '而', 'pinyin': 'er2', 'highest pitch': 7.12, 'lowest pitch': 6.5, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '不', 'pinyin': 'bu4', 'highest pitch': 8.73, 'lowest pitch': 6.02, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '答', 'pinyin': 'da2', 'highest pitch': 7.06, 'lowest pitch': 5.3, 'duration': 0.34, 'prosody hierarchy': '#4'}]