你是在说什么原则呢？
二是妥当性原则。[{'character': '二', 'pinyin': 'er4', 'highest pitch': 10.48, 'lowest pitch': 9.59, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '是', 'pinyin': 'shiii4', 'highest pitch': 9.08, 'lowest pitch': 8.0, 'duration': 0.24, 'prosody hierarchy': '#2'}, {'character': '妥', 'pinyin': 'tuo3', 'highest pitch': 13.64, 'lowest pitch': 5.74, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '当', 'pinyin': 'dang4', 'highest pitch': 10.39, 'lowest pitch': 9.17, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '性', 'pinyin': 'xing4', 'highest pitch': 9.17, 'lowest pitch': 6.93, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '原', 'pinyin': 'van2', 'highest pitch': 6.93, 'lowest pitch': 5.43, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '则', 'pinyin': 'ze2', 'highest pitch': 6.42, 'lowest pitch': 5.33, 'duration': 0.3, 'prosody hierarchy': '#4'}]