那么我们应该加强维护和保养水利设施。
它们被人为破坏后，在洪涝灾年防汛效果显著。[{'character': '它', 'pinyin': 'ta1', 'highest pitch': 9.62, 'lowest pitch': 9.37, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '们', 'pinyin': 'men5', 'highest pitch': 9.61, 'lowest pitch': 8.01, 'duration': 0.27, 'prosody hierarchy': '#2'}, {'character': '被', 'pinyin': 'bei4', 'highest pitch': 9.14, 'lowest pitch': 7.53, 'duration': 0.16, 'prosody hierarchy': 'null'}, {'character': '人', 'pinyin': 'ren2', 'highest pitch': 9.59, 'lowest pitch': 6.9, 'duration': 0.15, 'prosody hierarchy': 'null'}, {'character': '为', 'pinyin': 'uei2', 'highest pitch': 10.65, 'lowest pitch': 8.75, 'duration': 0.18, 'prosody hierarchy': '#1'}, {'character': '破', 'pinyin': 'po4', 'highest pitch': 9.27, 'lowest pitch': 8.06, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '坏', 'pinyin': 'huai4', 'highest pitch': 8.5, 'lowest pitch': 6.92, 'duration': 0.22, 'prosody hierarchy': 'null'}, {'character': '后', 'pinyin': 'hou4', 'highest pitch': 14.03, 'lowest pitch': 6.88, 'duration': 0.21, 'prosody hierarchy': '#3'}, {'pinyin': 'sp1', 'highest pitch': 0.0, 'lowest pitch': 0.0, 'duration': 0.19}, {'character': '在', 'pinyin': 'zai4', 'highest pitch': 8.84, 'lowest pitch': 7.29, 'duration': 0.24, 'prosody hierarchy': '#2'}, {'character': '洪', 'pinyin': 'hong2', 'highest pitch': 8.94, 'lowest pitch': 6.99, 'duration': 0.19, 'prosody hierarchy': 'null'}, {'character': '涝', 'pinyin': 'lao4', 'highest pitch': 10.79, 'lowest pitch': 8.54, 'duration': 0.19, 'prosody hierarchy': '#1'}, {'character': '灾', 'pinyin': 'zai1', 'highest pitch': 9.3, 'lowest pitch': 8.54, 'duration': 0.18, 'prosody hierarchy': 'null'}, {'character': '年', 'pinyin': 'nian2', 'highest pitch': 8.71, 'lowest pitch': 6.41, 'duration': 0.27, 'prosody hierarchy': '#2'}, {'character': '防', 'pinyin': 'fang2', 'highest pitch': 8.3, 'lowest pitch': 6.09, 'duration': 0.28, 'prosody hierarchy': 'null'}, {'character': '汛', 'pinyin': 'xvn4', 'highest pitch': 9.69, 'lowest pitch': 8.3, 'duration': 0.17, 'prosody hierarchy': '#1'}, {'character': '效', 'pinyin': 'xiao4', 'highest pitch': 8.83, 'lowest pitch': 6.83, 'duration': 0.2, 'prosody hierarchy': 'null'}, {'character': '果', 'pinyin': 'guo2', 'highest pitch': 9.24, 'lowest pitch': 7.16, 'duration': 0.14, 'prosody hierarchy': '#1'}, {'character': '显', 'pinyin': 'xian3', 'highest pitch': 9.24, 'lowest pitch': 4.64, 'duration': 0.26, 'prosody hierarchy': 'null'}, {'character': '著', 'pinyin': 'zhu4', 'highest pitch': 9.72, 'lowest pitch': 7.86, 'duration': 0.26, 'prosody hierarchy': '#4'}]