城南那片凹凸不平，杂草丛生的荒山坡真是令人讨厌。
四年前城南那片凹凸不平，杂草丛生的荒山坡不见了。[{'character': '四', 'pinyin': 'sii4', 'highest pitch': 10.59, 'lowest pitch': 9.83, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '年', 'pinyin': 'nian2', 'highest pitch': 10.1, 'lowest pitch': 8.53, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '前', 'pinyin': 'qian2', 'highest pitch': 8.86, 'lowest pitch': 6.23, 'duration': 0.36, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.03}, {'character': '城', 'pinyin': 'cheng2', 'highest pitch': 10.33, 'lowest pitch': 8.37, 'duration': 0.29, 'prosody hierarchy': 'null'}, {'character': '南', 'pinyin': 'nan2', 'highest pitch': 10.29, 'lowest pitch': 8.0, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '那', 'pinyin': 'na4', 'highest pitch': 9.18, 'lowest pitch': 7.73, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '片', 'pinyin': 'pian4', 'highest pitch': 8.91, 'lowest pitch': 7.32, 'duration': 0.28, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.06}, {'character': '凹', 'pinyin': 'ao1', 'highest pitch': 9.67, 'lowest pitch': 8.65, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '凸', 'pinyin': 'tu1', 'highest pitch': 10.5, 'lowest pitch': 9.56, 'duration': 0.23, 'prosody hierarchy': '#1'}, {'character': '不', 'pinyin': 'bu4', 'highest pitch': 9.86, 'lowest pitch': 7.66, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '平', 'pinyin': 'ping2', 'highest pitch': 8.0, 'lowest pitch': 5.78, 'duration': 0.37, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.05}, {'character': '杂', 'pinyin': 'za2', 'highest pitch': 6.73, 'lowest pitch': 6.26, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '草', 'pinyin': 'cao3', 'highest pitch': 7.94, 'lowest pitch': 4.69, 'duration': 0.24, 'prosody hierarchy': '#1'}, {'character': '丛', 'pinyin': 'cong2', 'highest pitch': 7.37, 'lowest pitch': 4.72, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '生', 'pinyin': 'sheng1', 'highest pitch': 9.38, 'lowest pitch': 7.37, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 8.86, 'lowest pitch': 8.3, 'duration': 0.08, 'prosody hierarchy': '#1'}, {'character': '荒', 'pinyin': 'huang1', 'highest pitch': 9.99, 'lowest pitch': 8.3, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '山', 'pinyin': 'shan1', 'highest pitch': 10.37, 'lowest pitch': 9.89, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '坡', 'pinyin': 'po1', 'highest pitch': 11.96, 'lowest pitch': 9.94, 'duration': 0.23, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.03}, {'character': '不', 'pinyin': 'bu2', 'highest pitch': 5.84, 'lowest pitch': 4.93, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '见', 'pinyin': 'jian4', 'highest pitch': 10.68, 'lowest pitch': 5.28, 'duration': 0.33, 'prosody hierarchy': 'null'}, {'character': '了', 'pinyin': 'le5', 'highest pitch': 6.73, 'lowest pitch': 6.25, 'duration': 0.16, 'prosody hierarchy': '#4'}]