"为什么他们不敢沿绳索攀爬至岸边？”
有几名游客不敢沿绳索攀爬至岸边。[{'character': '有', 'pinyin': 'iou2', 'highest pitch': 10.13, 'lowest pitch': 8.51, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '几', 'pinyin': 'ji3', 'highest pitch': 8.77, 'lowest pitch': 7.09, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '名', 'pinyin': 'ming2', 'highest pitch': 9.12, 'lowest pitch': 6.85, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '游', 'pinyin': 'iou2', 'highest pitch': 10.13, 'lowest pitch': 6.19, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '客', 'pinyin': 'ke4', 'highest pitch': 9.58, 'lowest pitch': 7.7, 'duration': 0.33, 'prosody hierarchy': '#2'}, {'character': '不', 'pinyin': 'bu4', 'highest pitch': 10.06, 'lowest pitch': 8.74, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '敢', 'pinyin': 'gan3', 'highest pitch': 8.25, 'lowest pitch': 5.92, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '沿', 'pinyin': 'ian2', 'highest pitch': 10.05, 'lowest pitch': 5.92, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '绳', 'pinyin': 'sheng2', 'highest pitch': 10.31, 'lowest pitch': 8.33, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '索', 'pinyin': 'suo3', 'highest pitch': 10.31, 'lowest pitch': 4.61, 'duration': 0.27, 'prosody hierarchy': '#2'}, {'character': '攀', 'pinyin': 'pan1', 'highest pitch': 9.42, 'lowest pitch': 9.02, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '爬', 'pinyin': 'pa2', 'highest pitch': 9.42, 'lowest pitch': 6.37, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '至', 'pinyin': 'zhiii4', 'highest pitch': 12.93, 'lowest pitch': 8.01, 'duration': 0.11, 'prosody hierarchy': '#1'}, {'character': '岸', 'pinyin': 'an4', 'highest pitch': 8.41, 'lowest pitch': 6.29, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '边', 'pinyin': 'bian1', 'highest pitch': 9.09, 'lowest pitch': 7.96, 'duration': 0.32, 'prosody hierarchy': '#4'}]