Also, those taking down the dams must know what they are doing. Perhaps scholars or students could be brought in to remove the dams stone by stone, rather than using land movers to try to get rid of the problem all at once.
拆壩的人還必須上點課，或讓學界老師、學生一塊塊把石頭移開，而不是用挖土機，三兩下粗枝大葉地解決。