为了利用这种人类胚胎干细胞，我们需要克服一些挑战。
因此，这种人类胚胎干细胞还不具备实用性。[{'character': '因', 'pinyin': 'in1', 'highest pitch': 9.64, 'lowest pitch': 8.99, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '此', 'pinyin': 'cii3', 'highest pitch': 9.64, 'lowest pitch': 5.2, 'duration': 0.32, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.15}, {'character': '这', 'pinyin': 'zhe4', 'highest pitch': 11.36, 'lowest pitch': 10.03, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '种', 'pinyin': 'zhong3', 'highest pitch': 10.03, 'lowest pitch': 6.98, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '人', 'pinyin': 'ren2', 'highest pitch': 7.55, 'lowest pitch': 6.15, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '类', 'pinyin': 'lei4', 'highest pitch': 8.44, 'lowest pitch': 7.55, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '胚', 'pinyin': 'pei1', 'highest pitch': 9.02, 'lowest pitch': 8.87, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '胎', 'pinyin': 'tai1', 'highest pitch': 9.3, 'lowest pitch': 8.7, 'duration': 0.16, 'prosody hierarchy': '#1'}, {'character': '干', 'pinyin': 'gan4', 'highest pitch': 9.45, 'lowest pitch': 7.53, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '细', 'pinyin': 'xi4', 'highest pitch': 7.7, 'lowest pitch': 6.38, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '胞', 'pinyin': 'bao1', 'highest pitch': 8.89, 'lowest pitch': 8.09, 'duration': 0.26, 'prosody hierarchy': '#2'}, {'character': '还', 'pinyin': 'hai2', 'highest pitch': 8.77, 'lowest pitch': 8.41, 'duration': 0.26, 'prosody hierarchy': '#1'}, {'character': '不', 'pinyin': 'bu2', 'highest pitch': 7.26, 'lowest pitch': 6.76, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '具', 'pinyin': 'jv4', 'highest pitch': 10.44, 'lowest pitch': 8.72, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '备', 'pinyin': 'bei4', 'highest pitch': 8.98, 'lowest pitch': 6.96, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '实', 'pinyin': 'shiii2', 'highest pitch': 7.01, 'lowest pitch': 6.22, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '用', 'pinyin': 'iong4', 'highest pitch': 7.44, 'lowest pitch': 6.71, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '性', 'pinyin': 'xing4', 'highest pitch': 6.78, 'lowest pitch': 5.05, 'duration': 0.31, 'prosody hierarchy': '#4'}]