这栏杆看起来很脏。
工作人员在擦拭汉白玉栏杆。[{'character': '工', 'pinyin': 'gong1', 'highest pitch': 10.87, 'lowest pitch': 10.45, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '作', 'pinyin': 'zuo4', 'highest pitch': 11.14, 'lowest pitch': 9.13, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '人', 'pinyin': 'ren2', 'highest pitch': 9.13, 'lowest pitch': 7.95, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '员', 'pinyin': 'van2', 'highest pitch': 8.2, 'lowest pitch': 6.63, 'duration': 0.26, 'prosody hierarchy': '#2'}, {'character': '在', 'pinyin': 'zai4', 'highest pitch': 8.58, 'lowest pitch': 6.85, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '擦', 'pinyin': 'ca1', 'highest pitch': 8.77, 'lowest pitch': 6.85, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '拭', 'pinyin': 'shiii4', 'highest pitch': 8.36, 'lowest pitch': 6.53, 'duration': 0.23, 'prosody hierarchy': '#2'}, {'character': '汉', 'pinyin': 'han4', 'highest pitch': 10.03, 'lowest pitch': 7.46, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '白', 'pinyin': 'bai2', 'highest pitch': 8.28, 'lowest pitch': 7.29, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '玉', 'pinyin': 'v4', 'highest pitch': 8.45, 'lowest pitch': 7.3, 'duration': 0.14, 'prosody hierarchy': '#1'}, {'character': '栏', 'pinyin': 'lan2', 'highest pitch': 7.3, 'lowest pitch': 5.82, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '杆', 'pinyin': 'gan1', 'highest pitch': 9.66, 'lowest pitch': 8.69, 'duration': 0.26, 'prosody hierarchy': '#4'}]