Migrating up rivers from the sea to breed in fresh water. Used of fish.
从海洋向上游到河流中，并在淡水中产卵的。用于指鱼。
"This river used to be full of big fish," he said.
他说：“以前河里的鱼都很大。”
He used to go to the seashore and bring plenty of fish back every day.
他过去每天都到海边去，带了好多鱼回家。
I used snapper, but any type of light, white fish fillet will work.
我用抓拍的，但任何类型的灯光，白色鱼片会奏效。
To overcome this problem, experimental induction of haploidy has been used in fish.
为了解决这个问题，在鱼类中用实验手段诱导了单倍体。
The ultrasonic method was used for the extraction of fish oil.
采用超声波提取方法从海鱼燕鲅鱼肉中提取鱼油。
The ultrasonic method was used for the extraction of fish oil.
采用超声波提取方法从海鱼燕鲅鱼肉中提取鱼油。
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