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鲸不是鱼类，而是哺乳类植物。
Whales are not fish, but mammals.
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想想鱼类和贝类所生活的环境。
Think about where fish and shellfish live.
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在这种情况下，鱼类是团体活动的。
Fishes are not alone in this situation.
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鱼类和海鸟错把塑料当作食物而呛死。
Fish and seabirds mistake plastic for food and choke to death.
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其中鱼类蛋白最好。
Fish protein is the best among them.
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鲨鱼以什么为食，主要是鱼类和其他小型海洋动物？
What do sharks feed on, mainly fish and other small sea animals?
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我们在海洋和鸟类、鱼类和鲸鱼等动物体内发现了塑料。
We have found plastic in the ocean and in animals like birds, fish and whales.
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然后这只鱼吃了这些海藻，或者吃其它吃了这些植物的鱼类。
Then the fish eats the algae or eat other fish that have eaten those plants.
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鱼类的生命周期使其成为一种人类的基本食物。
Their life cycle helps man provide himself with a basic food—fish.
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许多海洋鱼类是在淡水河里产卵的。
Many sea fishes spawn in rivers.
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有些鱼类就是不适合人工养殖。
Some fish are simply not suited to it.
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可是鱼类并没有采用这种方法。
But that is not the way that fish do it.
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这种分子主要储存在鱼类的脂肪中。
The molecule is most famously found in fatty fish.
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在海边还可以买到上好的新鲜鱼类。
On the coast, good, fresh fish is available.
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日本是世界上食用鱼类最多的国家。
Japanconsumes more fish than any other nation.
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油污还使许多鸟类和鱼类死亡。
The oil has already killed hundreds of birds and fish.
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长有四肢的古鱼类离开了大海。
Ancient four-limbed fish crawled out of the sea.
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其它鱼类的遭遇也不是更好。
Other fish are not faring much better.
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富油的鱼类也是维生素d的极好来源。
Oily fish are also an excellent source of vitamin D.
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答案是，它们吃较小的鱼类。
The answer is smaller fish.
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是不是有些鱼类比其他鱼碳强度更高？
Are some fish more carbon intensive than others?
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推动全球鱼类需求上升的因素有许多。
There are a lot of factors driving the rising global demand for fish.
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其次，所有的鱼类并不是天生都一样的。
The second is that not all fish are created equal.
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这里鱼类养殖场的条件出乎意料地干净。
The conditions on the fish farms are surprisingly clean.
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含氧量下降致使鱼类死亡。
And falling oxygen levels lead to dead fish.
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很多较小的鱼类也在减少。
Many of the smaller fish are also in decline.
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鱼类错将垃圾当作食物。
Fish mistake trash for food.
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水里没有任何植物、鱼类或任何其他生命。
There are no plants, fish, or any other visible life in the sea.
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水里没有任何植物、鱼类或任何其他生命。
There are no plants, fish, or any other visible life in the sea.
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