一是我们还需要更多的数据来支持我们的论点。
二是要素支撑不足。[{'character': '二', 'pinyin': 'er4', 'highest pitch': 10.42, 'lowest pitch': 8.71, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '是', 'pinyin': 'shiii4', 'highest pitch': 11.98, 'lowest pitch': 7.66, 'duration': 0.28, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.07}, {'character': '要', 'pinyin': 'iao4', 'highest pitch': 10.73, 'lowest pitch': 8.94, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '素', 'pinyin': 'su4', 'highest pitch': 8.94, 'lowest pitch': 7.11, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '支', 'pinyin': 'zhiii1', 'highest pitch': 8.43, 'lowest pitch': 7.97, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '撑', 'pinyin': 'cheng1', 'highest pitch': 9.03, 'lowest pitch': 7.97, 'duration': 0.25, 'prosody hierarchy': '#1'}, {'character': '不', 'pinyin': 'bu4', 'highest pitch': 9.15, 'lowest pitch': 6.4, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '足', 'pinyin': 'zu2', 'highest pitch': 6.92, 'lowest pitch': 5.74, 'duration': 0.29, 'prosody hierarchy': '#4'}]