这个问题有点复杂。
对此，不少网民提出了疑问。[{'character': '对', 'pinyin': 'duei4', 'highest pitch': 9.45, 'lowest pitch': 7.83, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '此', 'pinyin': 'cii3', 'highest pitch': 6.75, 'lowest pitch': 4.63, 'duration': 0.33, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.16}, {'character': '不', 'pinyin': 'bu4', 'highest pitch': 11.22, 'lowest pitch': 9.87, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '少', 'pinyin': 'shao2', 'highest pitch': 9.87, 'lowest pitch': 8.4, 'duration': 0.23, 'prosody hierarchy': '#1'}, {'character': '网', 'pinyin': 'uang3', 'highest pitch': 9.64, 'lowest pitch': 5.68, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '民', 'pinyin': 'min2', 'highest pitch': 7.28, 'lowest pitch': 5.75, 'duration': 0.26, 'prosody hierarchy': '#2'}, {'character': '提', 'pinyin': 'ti2', 'highest pitch': 7.19, 'lowest pitch': 6.63, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '出', 'pinyin': 'chu1', 'highest pitch': 8.5, 'lowest pitch': 6.85, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '了', 'pinyin': 'le5', 'highest pitch': 8.18, 'lowest pitch': 6.97, 'duration': 0.12, 'prosody hierarchy': '#1'}, {'character': '疑', 'pinyin': 'i2', 'highest pitch': 6.97, 'lowest pitch': 5.21, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '问', 'pinyin': 'uen4', 'highest pitch': 8.99, 'lowest pitch': 6.59, 'duration': 0.29, 'prosody hierarchy': '#4'}]