我们需要多久才能穿过迷雾河？
昨天的迷雾河仍然湍急，不过车辆已经能够飞快地通过。[{'character': '昨', 'pinyin': 'zuo2', 'highest pitch': 8.69, 'lowest pitch': 8.33, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '天', 'pinyin': 'tian1', 'highest pitch': 10.78, 'lowest pitch': 8.33, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 10.57, 'lowest pitch': 9.87, 'duration': 0.07, 'prosody hierarchy': '#1'}, {'character': '迷', 'pinyin': 'mi2', 'highest pitch': 9.87, 'lowest pitch': 7.99, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '雾', 'pinyin': 'u4', 'highest pitch': 9.52, 'lowest pitch': 7.91, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '河', 'pinyin': 'he2', 'highest pitch': 7.91, 'lowest pitch': 7.07, 'duration': 0.25, 'prosody hierarchy': '#1'}, {'character': '仍', 'pinyin': 'reng2', 'highest pitch': 10.19, 'lowest pitch': 7.62, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '然', 'pinyin': 'ran2', 'highest pitch': 10.31, 'lowest pitch': 7.44, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '湍', 'pinyin': 'tuan1', 'highest pitch': 8.65, 'lowest pitch': 7.44, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '急', 'pinyin': 'ji2', 'highest pitch': 7.82, 'lowest pitch': 5.76, 'duration': 0.29, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.31}, {'character': '不', 'pinyin': 'bu2', 'highest pitch': 6.91, 'lowest pitch': 6.8, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '过', 'pinyin': 'guo4', 'highest pitch': 9.69, 'lowest pitch': 6.53, 'duration': 0.27, 'prosody hierarchy': '#2'}, {'character': '车', 'pinyin': 'che1', 'highest pitch': 9.52, 'lowest pitch': 9.12, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '辆', 'pinyin': 'liang4', 'highest pitch': 9.35, 'lowest pitch': 7.46, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '已', 'pinyin': 'i3', 'highest pitch': 7.46, 'lowest pitch': 4.67, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '经', 'pinyin': 'jing1', 'highest pitch': 10.11, 'lowest pitch': 8.65, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '能', 'pinyin': 'neng2', 'highest pitch': 10.03, 'lowest pitch': 7.48, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '够', 'pinyin': 'gou4', 'highest pitch': 13.84, 'lowest pitch': 7.59, 'duration': 0.21, 'prosody hierarchy': '#2'}, {'character': '飞', 'pinyin': 'fei1', 'highest pitch': 10.84, 'lowest pitch': 10.36, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '快', 'pinyin': 'kuai4', 'highest pitch': 10.37, 'lowest pitch': 7.91, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '地', 'pinyin': 'de5', 'highest pitch': 10.57, 'lowest pitch': 5.9, 'duration': 0.1, 'prosody hierarchy': '#1'}, {'character': '通', 'pinyin': 'tong1', 'highest pitch': 7.68, 'lowest pitch': 7.24, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '过', 'pinyin': 'guo4', 'highest pitch': 9.69, 'lowest pitch': 4.66, 'duration': 0.28, 'prosody hierarchy': '#4'}]