我们需要确保食品的质量。
食品安全标准，保证安全是底线。[{'character': '食', 'pinyin': 'shiii2', 'highest pitch': 10.81, 'lowest pitch': 8.97, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '品', 'pinyin': 'pin3', 'highest pitch': 10.07, 'lowest pitch': 8.13, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '安', 'pinyin': 'an1', 'highest pitch': 10.45, 'lowest pitch': 9.41, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '全', 'pinyin': 'qvan2', 'highest pitch': 10.35, 'lowest pitch': 8.23, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '标', 'pinyin': 'biao1', 'highest pitch': 10.89, 'lowest pitch': 8.23, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '准', 'pinyin': 'zhuen3', 'highest pitch': 14.02, 'lowest pitch': 2.75, 'duration': 0.3, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.14}, {'character': '保', 'pinyin': 'bao3', 'highest pitch': 8.15, 'lowest pitch': 6.11, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '证', 'pinyin': 'zheng4', 'highest pitch': 8.46, 'lowest pitch': 6.11, 'duration': 0.14, 'prosody hierarchy': '#1'}, {'character': '安', 'pinyin': 'an1', 'highest pitch': 10.45, 'lowest pitch': 9.16, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '全', 'pinyin': 'qvan2', 'highest pitch': 10.35, 'lowest pitch': 6.68, 'duration': 0.23, 'prosody hierarchy': '#1'}, {'character': '是', 'pinyin': 'shiii4', 'highest pitch': 8.24, 'lowest pitch': 6.27, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '底', 'pinyin': 'di3', 'highest pitch': 5.93, 'lowest pitch': 3.35, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '线', 'pinyin': 'xian4', 'highest pitch': 8.08, 'lowest pitch': 5.45, 'duration': 0.36, 'prosody hierarchy': '#4'}]