科学家研究过鱼类远距离回游的现象。
Scientists have studied the migration of fish over long distances.
委员会的一份研究断定，大坝将会影响鱼类的回游，并可能加速诸如湄公河巨型鲶鱼这类濒危物种的灭绝。
One commission study concluded the dam would affect fish migration and could drive endangered species, like the Mekong giant catfish, to extinction.
狡猾的海狮不断吞吃回游的三文鱼，让鱼类生物学家十分困惑。
Crafty Sea Lion Befuddles Fish Biologists by Continuing to Munch on Migrating Salmon.
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