太困了，我需要休息一下。
艰难地啃完面包之后，他便趴在课桌上打盹。[{'character': '艰', 'pinyin': 'jian1', 'highest pitch': 11.1, 'lowest pitch': 10.5, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '难', 'pinyin': 'nan2', 'highest pitch': 10.89, 'lowest pitch': 8.16, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '地', 'pinyin': 'de5', 'highest pitch': 9.29, 'lowest pitch': 7.72, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '啃', 'pinyin': 'ken3', 'highest pitch': 8.68, 'lowest pitch': 6.0, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '完', 'pinyin': 'uan2', 'highest pitch': 6.85, 'lowest pitch': 5.58, 'duration': 0.14, 'prosody hierarchy': '#1'}, {'character': '面', 'pinyin': 'mian4', 'highest pitch': 8.19, 'lowest pitch': 6.85, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '包', 'pinyin': 'bao1', 'highest pitch': 9.02, 'lowest pitch': 7.38, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '之', 'pinyin': 'zhiii1', 'highest pitch': 10.27, 'lowest pitch': 9.53, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '后', 'pinyin': 'hou4', 'highest pitch': 14.11, 'lowest pitch': 9.27, 'duration': 0.22, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.13}, {'character': '他', 'pinyin': 'ta1', 'highest pitch': 8.27, 'lowest pitch': 7.28, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '便', 'pinyin': 'bian4', 'highest pitch': 8.36, 'lowest pitch': 7.12, 'duration': 0.2, 'prosody hierarchy': '#2'}, {'character': '趴', 'pinyin': 'pa1', 'highest pitch': 8.7, 'lowest pitch': 7.85, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '在', 'pinyin': 'zai4', 'highest pitch': 8.75, 'lowest pitch': 7.11, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '课', 'pinyin': 'ke4', 'highest pitch': 9.16, 'lowest pitch': 7.33, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '桌', 'pinyin': 'zhuo1', 'highest pitch': 9.14, 'lowest pitch': 8.92, 'duration': 0.12, 'prosody hierarchy': 'null'}, {'character': '上', 'pinyin': 'shang4', 'highest pitch': 9.83, 'lowest pitch': 6.65, 'duration': 0.21, 'prosody hierarchy': '#1'}, {'character': '打', 'pinyin': 'da2', 'highest pitch': 10.04, 'lowest pitch': 6.46, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '盹', 'pinyin': 'duen3', 'highest pitch': 9.55, 'lowest pitch': 3.18, 'duration': 0.33, 'prosody hierarchy': '#4'}]