发生了什么事情？
在掺混过程中工人发现部分“荔华”牌乳粉有结块、出虫现象。[{'character': '在', 'pinyin': 'zai4', 'highest pitch': 9.7, 'lowest pitch': 8.63, 'duration': 0.26, 'prosody hierarchy': '#1'}, {'character': '掺', 'pinyin': 'chan1', 'highest pitch': 11.22, 'lowest pitch': 8.74, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '混', 'pinyin': 'huen4', 'highest pitch': 11.6, 'lowest pitch': 9.48, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '过', 'pinyin': 'guo4', 'highest pitch': 9.73, 'lowest pitch': 7.77, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '程', 'pinyin': 'cheng2', 'highest pitch': 7.92, 'lowest pitch': 6.77, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '中', 'pinyin': 'zhong1', 'highest pitch': 8.99, 'lowest pitch': 7.35, 'duration': 0.24, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.19}, {'character': '工', 'pinyin': 'gong1', 'highest pitch': 10.29, 'lowest pitch': 10.04, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '人', 'pinyin': 'ren2', 'highest pitch': 10.15, 'lowest pitch': 7.77, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '发', 'pinyin': 'fa1', 'highest pitch': 9.26, 'lowest pitch': 8.2, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '现', 'pinyin': 'xian4', 'highest pitch': 8.9, 'lowest pitch': 7.58, 'duration': 0.25, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.07}, {'character': '部', 'pinyin': 'bu4', 'highest pitch': 10.01, 'lowest pitch': 8.26, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '分', 'pinyin': 'fen5', 'highest pitch': 9.28, 'lowest pitch': 8.25, 'duration': 0.24, 'prosody hierarchy': '#1'}, {'character': '荔', 'pinyin': 'li4', 'highest pitch': 10.95, 'lowest pitch': 9.14, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '华', 'pinyin': 'hua2', 'highest pitch': 12.16, 'lowest pitch': 7.74, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '牌', 'pinyin': 'pai2', 'highest pitch': 8.76, 'lowest pitch': 7.78, 'duration': 0.21, 'prosody hierarchy': '#1'}, {'character': '乳', 'pinyin': 'ru2', 'highest pitch': 8.77, 'lowest pitch': 6.97, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '粉', 'pinyin': 'fen3', 'highest pitch': 8.77, 'lowest pitch': 5.8, 'duration': 0.32, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.04}, {'character': '有', 'pinyin': 'iou3', 'highest pitch': 7.03, 'lowest pitch': 5.25, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '结', 'pinyin': 'jie2', 'highest pitch': 6.7, 'lowest pitch': 6.27, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '块', 'pinyin': 'kuai4', 'highest pitch': 10.08, 'lowest pitch': 7.7, 'duration': 0.3, 'prosody hierarchy': '#2'}, {'character': '出', 'pinyin': 'chu1', 'highest pitch': 10.74, 'lowest pitch': 10.59, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '虫', 'pinyin': 'chong2', 'highest pitch': 9.17, 'lowest pitch': 5.86, 'duration': 0.24, 'prosody hierarchy': '#1'}, {'character': '现', 'pinyin': 'xian4', 'highest pitch': 8.9, 'lowest pitch': 6.66, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '象', 'pinyin': 'xiang4', 'highest pitch': 7.95, 'lowest pitch': 4.87, 'duration': 0.27, 'prosody hierarchy': '#4'}]