any of several species of large food and game fish of the family Salmonidae, typically migrating from the sea to freshwater to spawn

鲑鱼每到产卵季节都会逆流而上。

noun · various species of freshwater or saltwater fish of the family Salmonidae, generally smaller than salmon and often found in clear, cold streams

这种鲑生活在高海拔的清凉溪流中。