一是要提高质量，不能只追求数量。
二是总量控制，不能像滚雪球。[{'character': '二', 'pinyin': 'er4', 'highest pitch': 10.97, 'lowest pitch': 9.74, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '是', 'pinyin': 'shiii4', 'highest pitch': 9.74, 'lowest pitch': 7.98, 'duration': 0.24, 'prosody hierarchy': '#2'}, {'character': '总', 'pinyin': 'zong3', 'highest pitch': 7.74, 'lowest pitch': 5.02, 'duration': 0.23, 'prosody hierarchy': 'null'}, {'character': '量', 'pinyin': 'liang4', 'highest pitch': 10.19, 'lowest pitch': 5.53, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '控', 'pinyin': 'kong4', 'highest pitch': 9.09, 'lowest pitch': 6.65, 'duration': 0.24, 'prosody hierarchy': 'null'}, {'character': '制', 'pinyin': 'zhiii4', 'highest pitch': 11.53, 'lowest pitch': 6.65, 'duration': 0.22, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.06}, {'character': '不', 'pinyin': 'bu4', 'highest pitch': 7.98, 'lowest pitch': 7.59, 'duration': 0.11, 'prosody hierarchy': 'null'}, {'character': '能', 'pinyin': 'neng2', 'highest pitch': 7.59, 'lowest pitch': 6.31, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '像', 'pinyin': 'xiang4', 'highest pitch': 8.61, 'lowest pitch': 6.78, 'duration': 0.22, 'prosody hierarchy': '#1'}, {'character': '滚', 'pinyin': 'guen2', 'highest pitch': 9.58, 'lowest pitch': 7.13, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '雪', 'pinyin': 'xve3', 'highest pitch': 9.54, 'lowest pitch': 4.98, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '球', 'pinyin': 'qiou2', 'highest pitch': 8.07, 'lowest pitch': 4.98, 'duration': 0.4, 'prosody hierarchy': '#4'}]