它们是什么东西？
它们体积如小猫，但爪子却比猫锋利许多。[{'character': '它', 'pinyin': 'ta1', 'highest pitch': 9.09, 'lowest pitch': 8.67, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '们', 'pinyin': 'men5', 'highest pitch': 8.83, 'lowest pitch': 7.65, 'duration': 0.26, 'prosody hierarchy': '#2'}, {'character': '体', 'pinyin': 'ti3', 'highest pitch': 8.02, 'lowest pitch': 5.8, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '积', 'pinyin': 'ji1', 'highest pitch': 9.97, 'lowest pitch': 5.8, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '如', 'pinyin': 'ru2', 'highest pitch': 10.35, 'lowest pitch': 8.59, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '小', 'pinyin': 'xiao3', 'highest pitch': 10.35, 'lowest pitch': 4.77, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '猫', 'pinyin': 'mao1', 'highest pitch': 9.97, 'lowest pitch': 4.79, 'duration': 0.32, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.26}, {'character': '但', 'pinyin': 'dan4', 'highest pitch': 10.83, 'lowest pitch': 9.51, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '爪', 'pinyin': 'zhua3', 'highest pitch': 8.45, 'lowest pitch': 4.07, 'duration': 0.28, 'prosody hierarchy': 'null'}, {'character': '子', 'pinyin': 'zii5', 'highest pitch': 9.91, 'lowest pitch': 7.67, 'duration': 0.22, 'prosody hierarchy': '#2'}, {'character': '却', 'pinyin': 'qve4', 'highest pitch': 9.54, 'lowest pitch': 7.75, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '比', 'pinyin': 'bi3', 'highest pitch': 6.37, 'lowest pitch': 5.52, 'duration': 0.11, 'prosody hierarchy': 'null'}, {'character': '猫', 'pinyin': 'mao1', 'highest pitch': 9.97, 'lowest pitch': 5.52, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '锋', 'pinyin': 'feng1', 'highest pitch': 10.25, 'lowest pitch': 7.83, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '利', 'pinyin': 'li4', 'highest pitch': 10.39, 'lowest pitch': 7.77, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '许', 'pinyin': 'xv3', 'highest pitch': 7.77, 'lowest pitch': 4.84, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '多', 'pinyin': 'duo1', 'highest pitch': 6.87, 'lowest pitch': 5.92, 'duration': 0.26, 'prosody hierarchy': '#4'}]