"也许我们应该尝试一些新的催款方式。”
老父亲每年都要低声下气地去催款，可总是碰壁。[{'character': '老', 'pinyin': 'lao3', 'highest pitch': 8.55, 'lowest pitch': 7.28, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '父', 'pinyin': 'fu4', 'highest pitch': 9.4, 'lowest pitch': 7.28, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '亲', 'pinyin': 'qin5', 'highest pitch': 8.32, 'lowest pitch': 7.0, 'duration': 0.33, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.07}, {'character': '每', 'pinyin': 'mei3', 'highest pitch': 7.94, 'lowest pitch': 6.69, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '年', 'pinyin': 'nian2', 'highest pitch': 9.72, 'lowest pitch': 6.38, 'duration': 0.26, 'prosody hierarchy': '#1'}, {'character': '都', 'pinyin': 'dou1', 'highest pitch': 10.16, 'lowest pitch': 9.33, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '要', 'pinyin': 'iao4', 'highest pitch': 9.33, 'lowest pitch': 7.96, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '低', 'pinyin': 'di1', 'highest pitch': 8.88, 'lowest pitch': 8.52, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '声', 'pinyin': 'sheng1', 'highest pitch': 9.66, 'lowest pitch': 8.52, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '下', 'pinyin': 'xia4', 'highest pitch': 9.03, 'lowest pitch': 7.5, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '气', 'pinyin': 'qi4', 'highest pitch': 8.13, 'lowest pitch': 6.02, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '地', 'pinyin': 'de5', 'highest pitch': 6.67, 'lowest pitch': 6.02, 'duration': 0.14, 'prosody hierarchy': '#1'}, {'character': '去', 'pinyin': 'qv4', 'highest pitch': 8.01, 'lowest pitch': 6.08, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '催', 'pinyin': 'cuei1', 'highest pitch': 9.64, 'lowest pitch': 9.19, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '款', 'pinyin': 'kuan3', 'highest pitch': 9.28, 'lowest pitch': 4.08, 'duration': 0.35, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.19}, {'character': '可', 'pinyin': 'ke2', 'highest pitch': 10.88, 'lowest pitch': 9.36, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '总', 'pinyin': 'zong3', 'highest pitch': 9.77, 'lowest pitch': 4.75, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '是', 'pinyin': 'shiii4', 'highest pitch': 10.13, 'lowest pitch': 9.16, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '碰', 'pinyin': 'peng4', 'highest pitch': 9.49, 'lowest pitch': 6.41, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '壁', 'pinyin': 'bi4', 'highest pitch': 7.98, 'lowest pitch': 4.73, 'duration': 0.29, 'prosody hierarchy': '#4'}]