我们需要认真考虑改革的必要性和影响。
中方反对为改革人为设定时限。[{'character': '中', 'pinyin': 'zhong1', 'highest pitch': 10.45, 'lowest pitch': 10.14, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '方', 'pinyin': 'fang1', 'highest pitch': 11.19, 'lowest pitch': 10.58, 'duration': 0.23, 'prosody hierarchy': '#1'}, {'character': '反', 'pinyin': 'fan3', 'highest pitch': 10.59, 'lowest pitch': 5.13, 'duration': 0.27, 'prosody hierarchy': 'null'}, {'character': '对', 'pinyin': 'duei4', 'highest pitch': 10.66, 'lowest pitch': 7.97, 'duration': 0.27, 'prosody hierarchy': '#2'}, {'character': '为', 'pinyin': 'uei4', 'highest pitch': 9.33, 'lowest pitch': 7.49, 'duration': 0.25, 'prosody hierarchy': 'null'}, {'character': '改', 'pinyin': 'gai3', 'highest pitch': 6.99, 'lowest pitch': 4.87, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '革', 'pinyin': 'ge2', 'highest pitch': 7.6, 'lowest pitch': 6.05, 'duration': 0.23, 'prosody hierarchy': '#2'}, {'character': '人', 'pinyin': 'ren2', 'highest pitch': 9.66, 'lowest pitch': 6.96, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '为', 'pinyin': 'uei2', 'highest pitch': 9.78, 'lowest pitch': 7.5, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '设', 'pinyin': 'she4', 'highest pitch': 8.74, 'lowest pitch': 6.84, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '定', 'pinyin': 'ding4', 'highest pitch': 7.99, 'lowest pitch': 6.64, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '时', 'pinyin': 'shiii2', 'highest pitch': 6.9, 'lowest pitch': 5.84, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '限', 'pinyin': 'xian4', 'highest pitch': 8.77, 'lowest pitch': 6.15, 'duration': 0.3, 'prosody hierarchy': '#4'}]