那是否有更高效的方法呢？
目前，消防队员只能探身水泥管，一点点刨掘。[{'character': '目', 'pinyin': 'mu4', 'highest pitch': 9.61, 'lowest pitch': 7.78, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '前', 'pinyin': 'qian2', 'highest pitch': 8.83, 'lowest pitch': 7.18, 'duration': 0.41, 'prosody hierarchy': '#2'}, {'character': '消', 'pinyin': 'xiao1', 'highest pitch': 11.14, 'lowest pitch': 10.5, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '防', 'pinyin': 'fang2', 'highest pitch': 11.14, 'lowest pitch': 8.45, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '队', 'pinyin': 'duei4', 'highest pitch': 9.58, 'lowest pitch': 7.1, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '员', 'pinyin': 'van2', 'highest pitch': 8.24, 'lowest pitch': 6.51, 'duration': 0.23, 'prosody hierarchy': '#2'}, {'character': '只', 'pinyin': 'zhiii3', 'highest pitch': 8.16, 'lowest pitch': 5.85, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '能', 'pinyin': 'neng2', 'highest pitch': 6.68, 'lowest pitch': 5.03, 'duration': 0.21, 'prosody hierarchy': '#1'}, {'character': '探', 'pinyin': 'tan4', 'highest pitch': 9.09, 'lowest pitch': 6.68, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '身', 'pinyin': 'shen1', 'highest pitch': 9.5, 'lowest pitch': 7.77, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '水', 'pinyin': 'shuei3', 'highest pitch': 9.37, 'lowest pitch': 5.54, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '泥', 'pinyin': 'ni2', 'highest pitch': 9.84, 'lowest pitch': 5.54, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '管', 'pinyin': 'guan3', 'highest pitch': 8.51, 'lowest pitch': 4.17, 'duration': 0.33, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.11}, {'character': '一', 'pinyin': 'i4', 'highest pitch': 10.21, 'lowest pitch': 7.93, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '点', 'pinyin': 'dian2', 'highest pitch': 9.58, 'lowest pitch': 7.54, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '点', 'pinyin': 'dian3', 'highest pitch': 9.75, 'lowest pitch': 5.47, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '刨', 'pinyin': 'pao2', 'highest pitch': 7.09, 'lowest pitch': 6.03, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '掘', 'pinyin': 'jve2', 'highest pitch': 7.07, 'lowest pitch': 5.97, 'duration': 0.32, 'prosody hierarchy': '#4'}]