你是怎么知道的？
这些赌博机都做过了手脚，玩赌博机的人必输无疑，没有赢的。[{'character': '这', 'pinyin': 'zhe4', 'highest pitch': 10.21, 'lowest pitch': 9.46, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '些', 'pinyin': 'xie1', 'highest pitch': 10.31, 'lowest pitch': 9.46, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '赌', 'pinyin': 'du3', 'highest pitch': 9.56, 'lowest pitch': 5.97, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '博', 'pinyin': 'bo2', 'highest pitch': 7.9, 'lowest pitch': 7.04, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '机', 'pinyin': 'ji1', 'highest pitch': 9.8, 'lowest pitch': 7.88, 'duration': 0.26, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.05}, {'character': '都', 'pinyin': 'dou1', 'highest pitch': 11.23, 'lowest pitch': 10.9, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '做', 'pinyin': 'zuo4', 'highest pitch': 11.35, 'lowest pitch': 9.9, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '过', 'pinyin': 'guo4', 'highest pitch': 9.35, 'lowest pitch': 8.06, 'duration': 0.13, 'prosody hierarchy': 'null'}, {'character': '了', 'pinyin': 'le5', 'highest pitch': 8.06, 'lowest pitch': 6.9, 'duration': 0.12, 'prosody hierarchy': '#1'}, {'character': '手', 'pinyin': 'shou2', 'highest pitch': 7.49, 'lowest pitch': 5.72, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '脚', 'pinyin': 'jiao3', 'highest pitch': 7.5, 'lowest pitch': 3.45, 'duration': 0.32, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.33}, {'character': '玩', 'pinyin': 'uan2', 'highest pitch': 9.23, 'lowest pitch': 8.14, 'duration': 0.21, 'prosody hierarchy': '#1'}, {'character': '赌', 'pinyin': 'du3', 'highest pitch': 9.56, 'lowest pitch': 5.73, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '博', 'pinyin': 'bo2', 'highest pitch': 7.9, 'lowest pitch': 6.99, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '机', 'pinyin': 'ji1', 'highest pitch': 9.8, 'lowest pitch': 7.27, 'duration': 0.14, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 8.95, 'lowest pitch': 6.79, 'duration': 0.14, 'prosody hierarchy': '#1'}, {'character': '人', 'pinyin': 'ren2', 'highest pitch': 7.77, 'lowest pitch': 5.53, 'duration': 0.25, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.05}, {'character': '必', 'pinyin': 'bi4', 'highest pitch': 10.87, 'lowest pitch': 9.44, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '输', 'pinyin': 'shu1', 'highest pitch': 9.44, 'lowest pitch': 8.22, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '无', 'pinyin': 'u2', 'highest pitch': 8.22, 'lowest pitch': 6.56, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '疑', 'pinyin': 'i2', 'highest pitch': 7.51, 'lowest pitch': 5.99, 'duration': 0.27, 'prosody hierarchy': '#2'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.11}, {'character': '没', 'pinyin': 'mei2', 'highest pitch': 8.69, 'lowest pitch': 6.66, 'duration': 0.12, 'prosody hierarchy': 'null'}, {'character': '有', 'pinyin': 'iou3', 'highest pitch': 10.66, 'lowest pitch': 7.42, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '赢', 'pinyin': 'ing2', 'highest pitch': 7.42, 'lowest pitch': 4.77, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '的', 'pinyin': 'de5', 'highest pitch': 8.95, 'lowest pitch': 4.91, 'duration': 0.25, 'prosody hierarchy': '#4'}]