是啊，时光飞逝。
往昔对比，葛启义感慨良多。[{'character': '往', 'pinyin': 'uang3', 'highest pitch': 8.08, 'lowest pitch': 6.28, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '昔', 'pinyin': 'xi1', 'highest pitch': 9.85, 'lowest pitch': 6.41, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '对', 'pinyin': 'duei4', 'highest pitch': 11.42, 'lowest pitch': 7.28, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '比', 'pinyin': 'bi3', 'highest pitch': 7.28, 'lowest pitch': 4.88, 'duration': 0.29, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.13}, {'character': '葛', 'pinyin': 'ge2', 'highest pitch': 7.51, 'lowest pitch': 6.87, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '启', 'pinyin': 'qi3', 'highest pitch': 7.51, 'lowest pitch': 6.18, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '义', 'pinyin': 'i4', 'highest pitch': 8.08, 'lowest pitch': 7.04, 'duration': 0.2, 'prosody hierarchy': '#2'}, {'character': '感', 'pinyin': 'gan2', 'highest pitch': 9.39, 'lowest pitch': 6.56, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '慨', 'pinyin': 'kai3', 'highest pitch': 9.39, 'lowest pitch': 6.27, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '良', 'pinyin': 'liang2', 'highest pitch': 7.48, 'lowest pitch': 5.74, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '多', 'pinyin': 'duo1', 'highest pitch': 9.83, 'lowest pitch': 7.25, 'duration': 0.27, 'prosody hierarchy': '#4'}]