谁来了？
孩子在我身上爬着玩，突然听到“咯，咯咯，咯”的敲门声。[{'character': '孩', 'pinyin': 'hai2', 'highest pitch': 8.24, 'lowest pitch': 7.45, 'duration': 0.28, 'prosody hierarchy': 'null'}, {'character': '子', 'pinyin': 'zii5', 'highest pitch': 9.44, 'lowest pitch': 7.58, 'duration': 0.23, 'prosody hierarchy': '#2'}, {'character': '在', 'pinyin': 'zai4', 'highest pitch': 9.31, 'lowest pitch': 7.42, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '我', 'pinyin': 'uo3', 'highest pitch': 7.42, 'lowest pitch': 6.16, 'duration': 0.12, 'prosody hierarchy': '#1'}, {'character': '身', 'pinyin': 'shen1', 'highest pitch': 8.75, 'lowest pitch': 6.32, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '上', 'pinyin': 'shang5', 'highest pitch': 9.27, 'lowest pitch': 7.13, 'duration': 0.22, 'prosody hierarchy': '#2'}, {'character': '爬', 'pinyin': 'pa2', 'highest pitch': 8.12, 'lowest pitch': 7.16, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '着', 'pinyin': 'zhe5', 'highest pitch': 10.49, 'lowest pitch': 8.72, 'duration': 0.13, 'prosody hierarchy': 'null'}, {'character': '玩', 'pinyin': 'uan2', 'highest pitch': 8.72, 'lowest pitch': 5.86, 'duration': 0.3, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.3}, {'character': '突', 'pinyin': 'tu1', 'highest pitch': 11.39, 'lowest pitch': 11.13, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '然', 'pinyin': 'ran2', 'highest pitch': 11.13, 'lowest pitch': 9.12, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '听', 'pinyin': 'ting1', 'highest pitch': 9.76, 'lowest pitch': 8.91, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '到', 'pinyin': 'dao4', 'highest pitch': 9.24, 'lowest pitch': 7.64, 'duration': 0.23, 'prosody hierarchy': '#1'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.12}, {'character': '咯', 'pinyin': 'ge1', 'highest pitch': 11.02, 'lowest pitch': 9.84, 'duration': 0.29, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.21}, {'character': '咯', 'pinyin': 'ge1', 'highest pitch': 11.02, 'lowest pitch': 8.79, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '咯', 'pinyin': 'ge1', 'highest pitch': 11.02, 'lowest pitch': 10.14, 'duration': 0.25, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.23}, {'character': '咯', 'pinyin': 'ge1', 'highest pitch': 11.02, 'lowest pitch': 10.06, 'duration': 0.28, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.08}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 8.94, 'lowest pitch': 6.37, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '敲', 'pinyin': 'qiao1', 'highest pitch': 7.92, 'lowest pitch': 6.37, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '门', 'pinyin': 'men2', 'highest pitch': 7.4, 'lowest pitch': 6.29, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '声', 'pinyin': 'sheng1', 'highest pitch': 8.41, 'lowest pitch': 7.12, 'duration': 0.28, 'prosody hierarchy': '#4'}]