我们需要一些强大的警戒力量。
他们手执弓弩等远射兵器，担任整个军阵的警戒任务。[{'character': '他', 'pinyin': 'ta1', 'highest pitch': 9.33, 'lowest pitch': 9.1, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '们', 'pinyin': 'men5', 'highest pitch': 9.33, 'lowest pitch': 8.3, 'duration': 0.24, 'prosody hierarchy': '#2'}, {'character': '手', 'pinyin': 'shou3', 'highest pitch': 8.48, 'lowest pitch': 5.13, 'duration': 0.28, 'prosody hierarchy': 'null'}, {'character': '执', 'pinyin': 'zhiii2', 'highest pitch': 7.08, 'lowest pitch': 6.69, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '弓', 'pinyin': 'gong1', 'highest pitch': 10.09, 'lowest pitch': 9.6, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '弩', 'pinyin': 'nu3', 'highest pitch': 10.09, 'lowest pitch': 5.95, 'duration': 0.29, 'prosody hierarchy': '#1'}, {'character': '等', 'pinyin': 'deng2', 'highest pitch': 9.28, 'lowest pitch': 6.96, 'duration': 0.26, 'prosody hierarchy': '#1'}, {'character': '远', 'pinyin': 'van3', 'highest pitch': 9.09, 'lowest pitch': 3.81, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '射', 'pinyin': 'she4', 'highest pitch': 10.19, 'lowest pitch': 5.01, 'duration': 0.23, 'prosody hierarchy': '#1'}, {'character': '兵', 'pinyin': 'bing1', 'highest pitch': 7.5, 'lowest pitch': 6.8, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '器', 'pinyin': 'qi4', 'highest pitch': 7.68, 'lowest pitch': 4.7, 'duration': 0.27, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.33}, {'character': '担', 'pinyin': 'dan1', 'highest pitch': 8.24, 'lowest pitch': 7.72, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '任', 'pinyin': 'ren4', 'highest pitch': 8.52, 'lowest pitch': 6.4, 'duration': 0.3, 'prosody hierarchy': '#2'}, {'character': '整', 'pinyin': 'zheng3', 'highest pitch': 8.36, 'lowest pitch': 4.04, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '个', 'pinyin': 'ge4', 'highest pitch': 9.91, 'lowest pitch': 4.04, 'duration': 0.14, 'prosody hierarchy': '#1'}, {'character': '军', 'pinyin': 'jvn1', 'highest pitch': 9.02, 'lowest pitch': 7.61, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '阵', 'pinyin': 'zhen4', 'highest pitch': 8.77, 'lowest pitch': 6.74, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 6.31, 'lowest pitch': 5.31, 'duration': 0.12, 'prosody hierarchy': '#2'}, {'character': '警', 'pinyin': 'jing3', 'highest pitch': 6.48, 'lowest pitch': 4.22, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '戒', 'pinyin': 'jie4', 'highest pitch': 7.07, 'lowest pitch': 5.28, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '任', 'pinyin': 'ren4', 'highest pitch': 8.52, 'lowest pitch': 6.68, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '务', 'pinyin': 'u4', 'highest pitch': 6.68, 'lowest pitch': 3.45, 'duration': 0.25, 'prosody hierarchy': '#4'}]