我听说太阳能热水器很节能，能给我介绍一下吗？
记者探访太阳能热水器作坊。[{'character': '记', 'pinyin': 'ji4', 'highest pitch': 11.08, 'lowest pitch': 9.0, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '者', 'pinyin': 'zhe3', 'highest pitch': 9.07, 'lowest pitch': 6.66, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '探', 'pinyin': 'tan4', 'highest pitch': 9.77, 'lowest pitch': 6.66, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '访', 'pinyin': 'fang3', 'highest pitch': 8.14, 'lowest pitch': 5.21, 'duration': 0.26, 'prosody hierarchy': '#2'}, {'character': '太', 'pinyin': 'tai4', 'highest pitch': 10.81, 'lowest pitch': 9.51, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '阳', 'pinyin': 'iang2', 'highest pitch': 9.51, 'lowest pitch': 8.59, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '能', 'pinyin': 'neng2', 'highest pitch': 9.55, 'lowest pitch': 7.87, 'duration': 0.15, 'prosody hierarchy': '#1'}, {'character': '热', 'pinyin': 're4', 'highest pitch': 10.45, 'lowest pitch': 9.03, 'duration': 0.17, 'prosody hierarchy': 'null'}, {'character': '水', 'pinyin': 'shuei3', 'highest pitch': 7.31, 'lowest pitch': 4.96, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '器', 'pinyin': 'qi4', 'highest pitch': 8.42, 'lowest pitch': 4.96, 'duration': 0.2, 'prosody hierarchy': '#1'}, {'character': '作', 'pinyin': 'zuo1', 'highest pitch': 10.65, 'lowest pitch': 6.88, 'duration': 0.21, 'prosody hierarchy': 'null'}, {'character': '坊', 'pinyin': 'fang5', 'highest pitch': 6.28, 'lowest pitch': 5.0, 'duration': 0.29, 'prosody hierarchy': '#4'}]