我们必须找到一个合适的爆破点。
官兵在狭窄的岩石夹缝中掏炮眼，准备集中爆破。[{'character': '官', 'pinyin': 'guan1', 'highest pitch': 10.19, 'lowest pitch': 9.85, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '兵', 'pinyin': 'bing1', 'highest pitch': 10.45, 'lowest pitch': 10.12, 'duration': 0.25, 'prosody hierarchy': '#2'}, {'character': '在', 'pinyin': 'zai4', 'highest pitch': 10.32, 'lowest pitch': 8.01, 'duration': 0.25, 'prosody hierarchy': '#1'}, {'character': '狭', 'pinyin': 'xia2', 'highest pitch': 9.72, 'lowest pitch': 7.24, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '窄', 'pinyin': 'zhai3', 'highest pitch': 10.33, 'lowest pitch': 6.25, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 6.1, 'lowest pitch': 5.89, 'duration': 0.09, 'prosody hierarchy': '#1'}, {'character': '岩', 'pinyin': 'ian2', 'highest pitch': 8.51, 'lowest pitch': 6.06, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '石', 'pinyin': 'shiii2', 'highest pitch': 8.51, 'lowest pitch': 6.75, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '夹', 'pinyin': 'jia1', 'highest pitch': 8.66, 'lowest pitch': 6.75, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '缝', 'pinyin': 'feng4', 'highest pitch': 8.47, 'lowest pitch': 6.79, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '中', 'pinyin': 'zhong1', 'highest pitch': 10.34, 'lowest pitch': 6.79, 'duration': 0.21, 'prosody hierarchy': '#1'}, {'character': '掏', 'pinyin': 'tao1', 'highest pitch': 10.51, 'lowest pitch': 10.37, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '炮', 'pinyin': 'pao4', 'highest pitch': 10.96, 'lowest pitch': 7.36, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '眼', 'pinyin': 'ian3', 'highest pitch': 7.36, 'lowest pitch': 2.91, 'duration': 0.28, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.19}, {'character': '准', 'pinyin': 'zhuen3', 'highest pitch': 7.44, 'lowest pitch': 6.3, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '备', 'pinyin': 'bei4', 'highest pitch': 6.78, 'lowest pitch': 6.23, 'duration': 0.2, 'prosody hierarchy': '#2'}, {'character': '集', 'pinyin': 'ji2', 'highest pitch': 7.22, 'lowest pitch': 7.0, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '中', 'pinyin': 'zhong1', 'highest pitch': 10.34, 'lowest pitch': 10.15, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '爆', 'pinyin': 'bao4', 'highest pitch': 11.0, 'lowest pitch': 7.99, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '破', 'pinyin': 'po4', 'highest pitch': 14.05, 'lowest pitch': 7.79, 'duration': 0.32, 'prosody hierarchy': '#4'}]