noun · any of several species of large food and game fishes of the family Salmonidae, typically referring to those that migrate from the ocean to freshwater to spawn

鲑鱼每年都会逆流而上回到它们出生的地方产卵。

noun · any of various species of primarily freshwater fish belonging to the family Salmonidae

每年秋天，成群的鲑鱼都会游回上游产卵。