fish ladder
英
美
- 鱼梯
详细释义
Noun:
-
a series of ascending pools providing a passage for salmon to swim upstream past a dam
双语例句
- Then, to help the salmon swim upstream to deposit their eggs, they build special fish ladders up the smaller dams and rapids.
同时，为帮助鲑鱼逆水，游回产卵的地方，他们在较小的水坝和急流上建设鱼梯。
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