... first-class lever 第一类杠杆 ... fish ladder 鱼道,鱼梯 ... fɪʃ laɪn] 钓线 ...
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fish-ladder 鱼梯
vane fish ladder 折流板式鱼道
open fish ladder 开敞式鱼梯
notch fish ladder 凹槽式鱼梯
·2,447,543篇论文数据,部分数据来源于NoteExpress
以上来源于: WordNet
N a row of ascending pools or weirs connected by short falls to allow fish to pass barrages or dams (使鱼类游过障碍或水坝而建造的)鱼梯
The extra water will be released gradually over the next three days with the aim of helping the fish leap up a fish ladder at a dam near Selkirk.
BBC: Dry weather has made it harder for the fish to move upstream
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