我们得快点找到逃生的出口。
不过当时楼梯中间部位已经垮塌，整个楼呈现“凹”字型。[{'character': '不', 'pinyin': 'bu2', 'highest pitch': 7.94, 'lowest pitch': 7.25, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '过', 'pinyin': 'guo4', 'highest pitch': 9.04, 'lowest pitch': 7.61, 'duration': 0.29, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.15}, {'character': '当', 'pinyin': 'dang1', 'highest pitch': 9.6, 'lowest pitch': 8.88, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '时', 'pinyin': 'shiii2', 'highest pitch': 9.36, 'lowest pitch': 7.29, 'duration': 0.21, 'prosody hierarchy': '#1'}, {'character': '楼', 'pinyin': 'lou2', 'highest pitch': 10.04, 'lowest pitch': 6.37, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '梯', 'pinyin': 'ti1', 'highest pitch': 9.02, 'lowest pitch': 7.47, 'duration': 0.23, 'prosody hierarchy': '#1'}, {'character': '中', 'pinyin': 'zhong1', 'highest pitch': 9.84, 'lowest pitch': 7.98, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '间', 'pinyin': 'jian1', 'highest pitch': 10.36, 'lowest pitch': 9.61, 'duration': 0.21, 'prosody hierarchy': '#1'}, {'character': '部', 'pinyin': 'bu4', 'highest pitch': 10.33, 'lowest pitch': 8.07, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '位', 'pinyin': 'uei4', 'highest pitch': 8.07, 'lowest pitch': 6.0, 'duration': 0.24, 'prosody hierarchy': '#2'}, {'character': '已', 'pinyin': 'i3', 'highest pitch': 5.05, 'lowest pitch': 4.31, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '经', 'pinyin': 'jing1', 'highest pitch': 9.92, 'lowest pitch': 7.73, 'duration': 0.21, 'prosody hierarchy': '#1'}, {'character': '垮', 'pinyin': 'kua3', 'highest pitch': 14.41, 'lowest pitch': 14.27, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '塌', 'pinyin': 'ta1', 'highest pitch': 7.17, 'lowest pitch': 6.46, 'duration': 0.33, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.26}, {'character': '整', 'pinyin': 'zheng3', 'highest pitch': 8.53, 'lowest pitch': 7.57, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '个', 'pinyin': 'ge4', 'highest pitch': 10.3, 'lowest pitch': 10.04, 'duration': 0.09, 'prosody hierarchy': 'null'}, {'character': '楼', 'pinyin': 'lou2', 'highest pitch': 10.04, 'lowest pitch': 7.25, 'duration': 0.27, 'prosody hierarchy': '#2'}, {'character': '呈', 'pinyin': 'cheng2', 'highest pitch': 7.27, 'lowest pitch': 6.27, 'duration': 0.27, 'prosody hierarchy': 'null'}, {'character': '现', 'pinyin': 'xian4', 'highest pitch': 8.63, 'lowest pitch': 6.47, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '凹', 'pinyin': 'ao1', 'highest pitch': 10.13, 'lowest pitch': 8.93, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '字', 'pinyin': 'zii4', 'highest pitch': 9.85, 'lowest pitch': 7.13, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '型', 'pinyin': 'xing2', 'highest pitch': 7.13, 'lowest pitch': 4.74, 'duration': 0.38, 'prosody hierarchy': '#4'}]