"We can raise it up again after a year to change the batteries. That means we can avoid using divers, which is a really risky operation that we wanted to avoid," he said.
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，更多细节参见91视频
这五年，河湖复苏见证生态蝶变。断流百年的京杭大运河连续4年全线水流贯通，断流二十六载的永定河碧波荡漾。越来越多的幸福河湖，正在成为百姓家门口的“诗和远方”。
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