... 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
open fish ladder 开敞式鱼梯
vane fish ladder 折流板式鱼道
notch fish ladder 凹槽式鱼梯
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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
And hira mm . chittenden locks , fish ladder space needle etc . admission not included.
游览西雅图市中心三文鱼梯水闸及太空针塔，接著送往温哥华之酒店休息。
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There is a children's interactive play room, a salmon ladder and fish hatchery, and more than 400 species of sea life.
还有儿童互动的游戏间、鲑鱼鱼梯和孵卵的地方，以及四百多品种的水族。
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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