我知道了。
一加一等于二。[{'character': '一', 'pinyin': 'i1', 'highest pitch': 10.51, 'lowest pitch': 9.41, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '加', 'pinyin': 'jia1', 'highest pitch': 10.87, 'lowest pitch': 10.12, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '一', 'pinyin': 'i1', 'highest pitch': 10.51, 'lowest pitch': 9.96, 'duration': 0.23, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.05}, {'character': '等', 'pinyin': 'deng3', 'highest pitch': 9.3, 'lowest pitch': 5.47, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '于', 'pinyin': 'v2', 'highest pitch': 6.38, 'lowest pitch': 5.14, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '二', 'pinyin': 'er4', 'highest pitch': 10.39, 'lowest pitch': 6.62, 'duration': 0.3, 'prosody hierarchy': '#4'}]