他们在沙漠中迷失了方向。
茫茫沙漠淹没了他们跋涉的足印。[{'character': '茫', 'pinyin': 'mang2', 'highest pitch': 10.09, 'lowest pitch': 7.84, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '茫', 'pinyin': 'mang2', 'highest pitch': 10.09, 'lowest pitch': 8.46, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '沙', 'pinyin': 'sha1', 'highest pitch': 10.61, 'lowest pitch': 10.22, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '漠', 'pinyin': 'mo4', 'highest pitch': 10.88, 'lowest pitch': 7.33, 'duration': 0.29, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.07}, {'character': '淹', 'pinyin': 'ian1', 'highest pitch': 7.65, 'lowest pitch': 7.34, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '没', 'pinyin': 'mo4', 'highest pitch': 10.88, 'lowest pitch': 6.74, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '了', 'pinyin': 'le5', 'highest pitch': 6.74, 'lowest pitch': 6.37, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '他', 'pinyin': 'ta1', 'highest pitch': 8.44, 'lowest pitch': 7.54, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '们', 'pinyin': 'men5', 'highest pitch': 7.7, 'lowest pitch': 7.04, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '跋', 'pinyin': 'ba2', 'highest pitch': 7.76, 'lowest pitch': 5.19, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '涉', 'pinyin': 'she4', 'highest pitch': 10.55, 'lowest pitch': 7.76, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 8.49, 'lowest pitch': 6.49, 'duration': 0.12, 'prosody hierarchy': '#1'}, {'character': '足', 'pinyin': 'zu2', 'highest pitch': 6.49, 'lowest pitch': 5.52, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '印', 'pinyin': 'in4', 'highest pitch': 7.15, 'lowest pitch': 5.95, 'duration': 0.26, 'prosody hierarchy': '#4'}]