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非常非常有意思，在小河里装一座坝（weir，更准确地说叫堰）后，泥沙沉积状况的长期变...
source link: https://weibo.com/5097174964/H2tL8vLCV
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非常非常有意思，在小河里装一座坝（weir，更准确地说叫堰）后，泥沙沉积状况的长期变化
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